NEC IS007 ISM6 2 Config Setting Tool Users Manual GUI

7/24/2019 NEC IS007 ISM6 2 Config Setting Tool Users Manual GUI

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NEC Storage Software

Configuration Setting Tool

Users Manual (GUI)

IS007-22E


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NEC Corporation 2001-2010

No part of the contents of this book may be reproduced or

transmitted in any form without permission of NEC Corporation.

The contents of this book may be modified without notice in the future.


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Preface

This manual describes how to perform the following by using the GUI (Graphical User Interface) on NEC Storage

Manager clients:

Configure the NEC Storage series disk array subsystem.

Refer to the disk array configuration information.

The client unit provides the following two GUIs.

Windows-based GUI

GUI based on the Web

This manual uses the terms iSM client or client to represent the client unit without making any distinction between

both GUIs.

To represent only the former, iSM client (Win GUI) or client (Win GUI) is used, and to represent only the latter, iSM

client (Web GUI) or client (Web GUI) is used.

It is also possible to use the CLI (Command Line Interface) to configure the disk array subsystem or refer to the

configuration information. For details, refer to the NEC Storage Software Configuration Setting Tool Users Manual

(IS002).

This manual is intended for readers who already possess the professional knowledge about the NEC Storage series disk

array subsystem. Refer to the manual of the NEC Storage series disk array subsystem for information on its functions.

Refer to the NEC Storage Software Manual Guide (IS901) for the overview of NEC Storage and the related manuals.

Remarks 1. This manual explains functions implemented by the following program products:

NEC Storage Manager and NEC Storage BaseProduct

NEC Storage AccessControl

NEC Storage DynamicDataReplication

NEC Storage ReallocationControl

NEC Storage RemoteDataReplication


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2. This manual is applicable to the program products of the following versions:

NEC Storage Manager Ver6.2

NEC Storage BaseProduct Ver6.2

3. The NEC Storage Manager is referred to as iSM or Storage Manager in this manual unless clearly specified.

Also, the following terms refer to the corresponding NEC Storage software products.

Term NEC Storage Software Product

AccessControl NEC Storage AccessControl

ControlCommand NEC Storage ControlCommand (Note)

DynamicDataReplication NEC Storage DynamicDataReplication

RemoteDataReplication NEC Storage RemoteDataReplication

Note: NEC Storage ControlCommand is a program product that has integrated the following five functions.

ReplicationControl

SnapControl

ReplicationControl/DisasterRecovery

ProtectControl

PowerControl

4. The NEC series disk array subsystem is referred to as a disk array in this manual unless clearly specified.

Also, the following terms refer to the corresponding NEC Storage hardware products.

Term NEC Storage Hardware Product

D series NEC Storage D series

D1 series NEC Storage D1 series




E series NEC Storage E series

E1 series NEC Storage E1 series

xxx series or xxxx series NEC Storage xxx series or NEC Storage xxxx series

Sxxx or Sxxxx NEC Storage Sxxx or NEC Storage Sxxxx

* xxx and xxxx are numbers.

5. The following terms in this manual refer to the corresponding NEC Storage software manuals.

Term NEC Storage Software Manual

User's Manual (UNIX) NEC Storage Software NEC Storage Manager User's Manual(UNIX) (IS001)

User's Manual NEC Storage Software NEC Storage Manager User's Manual(IS004)

Data Replication User's Manual(Function Guide)

NEC Storage Software Data Replication User's Manual (FunctionGuide) (IS015)

Snapshot User's Manual (Function

Guide)

NEC Storage Software Snapshot User's Manual (Function Guide)

(IS030)

LD Administrator Users Manual NEC Storage Software LD Administrator Users Manual (IS037)

Power Saving Users Manual NEC Storage Software Power Saving Users Manual (IS042)

Partitioning Users Manual NEC Storage Software Partitioning Users Manual (IS043)


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6. Trademarks and registered trademarks

HP-UX is a registered trademark of Hewlett-Packard Co. in the United States.

UNIX is a registered trademark of The Open Group in the United States and other countries.

Microsoft, Windows, Windows Server, and Windows Vista are trademarks or registered

trademarks of Microsoft Corporation in the United States and other countries.

Solaris is a trademark or a registered trademark of Sun Microsystems, Inc. in the United States and other

countries.

Linux is a trademark or registered trademark of Mr. Linus Torvalds in the United States and other

countries.

Other product names and company names, etc. are trademarks or registered trademarks of the associated

companies.

7. This product includes the OSSs below. For details on the licenses, refer to Appendix D of this manual.

Apache log4j (http://logging.apache.org/)

flex (http://flex.sourceforge.net/)

OpenSSL (http://www.openssl.org/)

8. In this document, the capacity is calculated based on units of 1024 (for example 1 KB = 1024 bytes) unless

otherwise specified.

9. In this document, System Volume means Storage System Volume unless otherwise specified.

10. In this document, matters to which careful attention needs to be paid will be described as follows:

Be sure to observe the instructions.

If the indications are ignored and the system is improperly operated, settings which have been already made

might be affected.

Type of Indication

Type Description

Describes contents which require users to pay special attention for operation.

Describes information about restrictions on operation.

1st Edition in October 2001

22nd Edition in January 2010


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Contents

Part I Overview..................................................................................................................................................I-1

Chapter 1 Storage Overview............................................................................................................................................I-21.1 Disk Array .................... ...................... ...................... ...................... ...................... .................... ...................... .......... I-21.2 Disk Array Configuration.................... ...................... ..................... ..................... ..................... ...................... .......... I-8

Chapter 2 Overview of Disk Array Configuration Setting ..................... ..................... ...................... .................... ..... I-302.1 Pool and RANK................ ...................... ..................... ...................... ..................... ..................... ..................... ...... I-31

2.1.1 Basic Pool.................... ...................... ...................... ...................... ...................... .................... ..................... .. I-322.1.2 Dynamic Pool .................... ...................... ..................... ...................... ...................... ...................... ................ I-342.1.3 RANK..... ..................... ...................... ..................... ..................... ...................... ...................... ..................... .. I-38

2.2 Logical Disk .................... ...................... ..................... ...................... ...................... ..................... ..................... ...... I-392.3 Spare.................... ...................... ...................... ...................... ...................... ..................... ..................... ................. I-402.4 Nickname......................... ...................... ...................... ...................... ...................... .................... ..................... ...... I-40

Chapter 3 Overview of AccessControl..........................................................................................................................I-413.1 LD Set............... ...................... ...................... ...................... ...................... ..................... ..................... .................... I-423.2 WWN Mode .................... ...................... ...................... ...................... ...................... .................... ..................... ...... I-443.3 Port Mode .................... ...................... ...................... ...................... ...................... .................... ..................... .......... I-463.4 Access Control for iSCSI ................... ...................... ..................... ...................... ..................... ..................... ......... I-48

Part II Installation.............................................................................................................................................II-1

Chapter 4 Operation Procedures .................................................................................................................................. II-24.1 Initial Installation ....................................................................................................................................................II-2

4.1.1 Setting the Storage Manager............................................................................................................................II-34.1.2 Setting a Disk Array ..................... ....................... ...................... ....................... ................... ..................... .......II-34.1.3 Binding a Pool or RANK.................................................................................................................................II-34.1.4 Binding a Logical Disk....................................................................................................................................II-44.1.5 Setting a Logical Disk Nickname....................................................................................................................II-44.1.6 Installing the Access Control...........................................................................................................................II-4

4.2 Adding Physical Disks ............................................................................................................................................II-54.2.1 Binding and Expanding a Pool or RANK .......................................................................................................II-54.2.2 Binding a Logical Disk....................................................................................................................................II-64.2.3 Changing the Access Control Configuration...................................................................................................II-6

4.3 Changing the Configuration of Logical Disks.........................................................................................................II-74.3.1 Deassigning a Logical Disk.............................................................................................................................II-84.3.2 Unbinding a Logical Disk................................................................................................................................II-84.3.3 Unbinding a Pool or RANK ............................................................................................................................II-8

4.3.4 Binding a Pool or RANK.................................................................................................................................II-84.3.5 Binding a Logical Disk....................................................................................................................................II-94.3.6 Changing the Access Control Configuration...................................................................................................II-9

4.4 Installing Access Control ......................................................................................................................................II-104.4.1 Stopping the Server .......................................................................................................................................II-114.4.2 Setting a Disk Array ..................... ....................... ...................... ....................... ................... ..................... .....II-114.4.3 Setting the Port Access Mode........................................................................................................................II-114.4.4 Creating an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-114.4.5 Linking an LD Set and Path ..........................................................................................................................II-114.4.6 Assigning a Logical Disk ..............................................................................................................................II-114.4.7 Starting the Access Control .................... ..................... ..................... ..................... ...................... .................. II-124.4.8 Starting the Server ..................... ...................... ..................... ...................... ..................... ...................... ........II-12

4.5 Adding a Server.....................................................................................................................................................II-134.5.1 Setting the Port Access Mode........................................................................................................................II-144.5.2 Creating an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-144.5.3 Linking an LD Set and Path ..........................................................................................................................II-144.5.4 Assigning a Logical Disk ..............................................................................................................................II-14


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4.5.5 Restarting the Server .....................................................................................................................................II-144.6 Changing the Configuration of Access Control ....................................................................................................II-15

4.6.1 Stopping the Server .......................................................................................................................................II-164.6.2 Deassigning a Logical Disk...........................................................................................................................II-16

4.6.3 Deleting an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-164.6.4 Creating an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-164.6.5 Setting/Changing Link between an LD Set and Path ....................... ....................... ....................... ............... II-164.6.6 Assigning a Logical Disk ..............................................................................................................................II-164.6.7 Starting the Server ..................... ...................... ..................... ...................... ..................... ...................... ........II-16

4.7 Newly Installing a Disk Array Supporting iSCSI ............................ ..................... ..................... ................... ........II-174.8 Adding Physical Disks supporting iSCSI..............................................................................................................II-17

4.8.1 Binding/Expanding a Pool.............................................................................................................................II-174.8.2 Binding a Logical Disk..................................................................................................................................II-184.8.3 Changing the Configuration of Access Control for iSCSI ..................... ..................... .................... .............. II-18

4.9 Changing the Configuration of Logical Disks supporting iSCSI..........................................................................II-194.9.1 Deassigning a Logical Disk...........................................................................................................................II-204.9.2 Unbinding a Logical Disk..............................................................................................................................II-204.9.3 Unbinding a Pool...........................................................................................................................................II-204.9.4 Binding a Pool ...................... ....................... ...................... ....................... ...................... ................... ............ II-204.9.5 Binding a Logical Disk..................................................................................................................................II-214.9.6 Changing the Configuration of Access Control for iSCSI ..................... ..................... .................... .............. II-21

4.10 Adding a Server Supporting iSCSI........................................................................................................................II-224.10.1 iSCSI Setting Screen .....................................................................................................................................II-234.10.2 Starting the iSCSI Setup Wizard ................... ...................... ...................... ...................... .................. ............ II-234.10.3 Creating an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-234.10.4 Adding an Initiator ........................................................................................................................................II-234.10.5 Binding and Assigning a Logical Disk..........................................................................................................II-234.10.6 Confirmation Screen......................................................................................................................................II-234.10.7 Exiting the iSCSI Setup Wizard ...................... ...................... ....................... ...................... ................... ........II-244.10.8 Starting the Server ..................... ...................... ..................... ...................... ..................... ...................... ........II-24

4.11 Changing the Configuration of Access Control for iSCSI .................. ..................... ..................... .................... ....II-254.11.1 Stopping the Server .......................................................................................................................................II-274.11.2 iSCSI Setting Screen .....................................................................................................................................II-27

4.11.3 Deleting an LD Set .................... ...................... ...................... ...................... ..................... .................... .........II-274.11.4 Starting the iSCSI Setup Wizard ................... ...................... ...................... ...................... .................. ............ II-274.11.5 Editing an LD Set ...................... ...................... ...................... ...................... ...................... .................... ........II-274.11.6 Editing an Initiator.........................................................................................................................................II-274.11.7 Deleting an Initiator.......................................................................................................................................II-284.11.8 Binding and Assigning a Logical Disk..........................................................................................................II-284.11.9 Confirmation Screen......................................................................................................................................II-284.11.10 Exiting the iSCSI Setup Wizard ..................... ....................... ...................... ....................... .................. .....II-284.11.11 Starting the Server ..................... ..................... ...................... ..................... ...................... ..................... .....II-28

Part III Operations...........................................................................................................................................III-1

Chapter 5 Parameters and Starting Configuration Setting.......................................................................................III-2

5.1 Parameters .................... ..................... ...................... ..................... ...................... ..................... .................... .......... III-25.2 User Levels and Scope of Operations ................................................................................................................. III-115.3 Starting Configuration Setting - iSM Client (Web GUI) .................................................................................... III-12

5.3.1 Quick Configuration.................................................................................................................................... III-155.3.2 Configuration Setting .................................................................................................................................. III-185.3.3 Configuration Reference.............................................................................................................................. III-215.3.4 Extension Enclosure Incorporation ............................................................................................................. III-24

5.4 Starting Configuration Setting - iSM Client (Win GUI)..................................................................................... III-26

Chapter 6 Disk Array Configuration Setting (Disk Arrays with Pool) ..................................................................III-31 6.1 Pool Binding........................................................................................................................................................ III-31

6.1.1 Binding a Pool ...................... ....................... ...................... ....................... ...................... .................. ........... III-326.1.2 Expanding Capacity of a Pool .................... ....................... ...................... ....................... ................... .......... III-566.1.3 Unbinding a Pool......................................................................................................................................... III-656.1.4 Renaming a Pool.......................................................................................................................................... III-696.1.5 Changing Rebuild Time and Expansion Time of a Pool.... ..................... ...................... ..................... ......... III-71


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6.1.6 Setting Eco Mode ........................................................................................................................................ III-736.1.7 Changing Allocation Attribute of Partition ..................... ....................... ...................... ...................... ......... III-746.1.8 Changing Actual Capacity Threshold.......................................................................................................... III-75

6.2 Method of Binding Logical Disks ..................... ...................... ..................... ...................... ................... .............. III-76

6.2.1 Binding Logical Disks................................................................................................................................. III-776.2.2 Expanding Capacity of Logical Disks....................................................................................................... III-1066.2.3 Unbinding Logical Disks........................................................................................................................... III-1106.2.4 Renaming a Logical Disk ..................... ...................... ....................... ...................... ................... ............... III-1126.2.5 Changing Time to Bind Logical Disks...................................................................................................... III-1146.2.6 Setting Cache............................................................................................................................................. III-1166.2.7 Changing Quota and Threshold Values..................................................................................................... III-1186.2.8 Changing Responses.................................................................................................................................. III-1186.2.9 Logical Disk Batch Setting........................................................................................................................ III-119

6.3 Binding a Spare ................................................................................................................................................. III-1456.3.1 Binding a Spare ......................................................................................................................................... III-1456.3.2 Unbinding a Spare .................... ....................... ...................... ....................... ...................... ................. ...... III-154

6.4 About Configuration Setting Window............................................................................................................... III-1576.4.1 Logical Disk Binding List Screen ............................................................................................................. III-1576.4.2 Logical Disk Configuration Screen ..................... ....................... ....................... ....................... ............... .. III-1606.4.3 Pool List View........................................................................................................................................... III-1616.4.4 Pool Information View................... ...................... ...................... ...................... ..................... ................. ... III-1636.4.5 Spare List View ..................... ...................... ...................... ..................... ...................... .................... ......... III-1706.4.6 Unused Disk List View.............................................................................................................................. III-173

6.5 Quick Configuration.......................................................................................................................................... III-1756.5.1 Batch License Unlock................................................................................................................................ III-1766.5.2 LD Binding (FC) ....................................................................................................................................... III-1786.5.3 LD Binding (iSCSI)................................................................................................................................... III-184

6.6 Extension Enclosure Incorporation ................................................................................................................... III-185

Chapter 7 Disk Array Configuration Setting (Disk Arrays Other Than the Disk Arrays with Pool) ............... III-1947.1 Binding a RANK.................... ....................... ...................... ....................... ...................... ................. ................ III-194

7.1.1 Binding a RANK ................... ....................... ...................... ....................... ...................... ................. ......... III-1967.1.2 Unbinding a RANK................................................................................................................................... III-1987.1.3 Expanding Capacity of a RANK ..................... ....................... ...................... ....................... ................. ..... III-2007.1.4 Setting RANK Rebuild Time .................................................................................................................... III-202

7.2 Configuring Logical Disks ...................... ...................... ...................... ...................... .................. ................... ... III-2067.2.1 Binding Logical Disks............................................................................................................................... III-2077.2.2 Unbinding Logical Disks........................................................................................................................... III-2117.2.3 Changing Logical Disk Bind Time............................................................................................................ III-2127.2.4 Configuring Logical Disks in a Batch... ...................... ....................... ...................... ..................... ............ III-213

7.3 Binding a Spare ................................................................................................................................................. III-2247.3.1 Binding Spares........................................................................................................................................... III-2257.3.2 Unbinding a Spare .................... ....................... ...................... ....................... ...................... ................. ...... III-2267.3.3 Configuring Spare Rebuild Mode.............................................................................................................. III-227

7.4 Setting the Port ...................... ...................... ...................... ...................... ...................... .................... ................ III-2297.4.1 Expand LUN.............................................................................................................................................. III-229

7.5 Special Settings ................................................................................................................................................. III-231

7.5.1 Cross Call and Auto Assignment............................................................................................................... III-2317.5.2 Ownership.................................................................................................................................................. III-233

7.6 Explanation of Configuration Setting Windows ............................................................................................... III-2357.6.1 RANK/Spare Screen.................................................................................................................................. III-2367.6.2 Logical Disk Screen................................................................................................................................... III-241

Chapter 8 Configuration Setting (for All Models iSM Supports) ................... ..................... ..................... ............ III-2458.1 Setting Nicknames............................................................................................................................................. III-245

8.1.1 Setting a Disk Array Name........................................................................................................................ III-2468.1.2 Setting a Port Name................................................................................................................................... III-2488.1.3 Batch-Setting Nicknames ..................... ...................... ...................... ...................... .................... ............... III-250

8.2 Ports................................................................................................................................................................... III-2538.3 Network .................... ...................... ...................... ...................... ...................... .................... .................... ......... III-2558.4 Unlocking/Displaying License ...................... ...................... ...................... ...................... ................... ............... III-261

8.5 Setting Disk Array Time ................................................................................................................................... III-2648.6 Obtaining Logs in the Disk Array ..................... ...................... ...................... ...................... .................. ............ III-267


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8.7 Copy Back Mode............................................................................................................................................... III-2708.8 Getting Configuration Information.................................................................................................................... III-271

8.8.1 Getting Configuration Information in Text Format................................................................................... III-2718.8.2 Getting Configuration Information in CSV Format ................... ..................... ..................... ..................... III-274

8.9 Replication Pair Batch Setting .......................................................................................................................... III-2768.10 Setting Host Ports Setting.............................................................................................................................. III-2808.11 Host Ports (iSCSI) Setting............................................................................................................................. III-2838.12 iSNS Server Setting....................................................................................................................................... III-2868.13 Eco Mode Setting ...................... ....................... ...................... ....................... ..................... .................. ......... III-2888.14 Setting a Volume To Be Recognized By HostSet .................... ....................... ...................... .................... .... III-2928.15 Write Cache Setting....................................................................................................................................... III-2938.16 Canceling Alarms ...................... ...................... ...................... ...................... ...................... ................... ......... III-293

Chapter 9 Using AccessControl................................................................................................................................III-2949.1 Changing the Mode Type of Port. ...................... ....................... ...................... ....................... .................. ......... III-2949.2 Setting LD Sets.................................................................................................................................................. III-298

9.2.1 Setting an LD Set....................................................................................................................................... III-2999.2.2 Linking an LD Set and Path ...................................................................................................................... III-301

9.2.3 Changing an LD Set Name........................................................................................................................ III-3079.2.4 Deleting an LD Set .................... ...................... ...................... ...................... ..................... ................... ...... III-3099.2.5 Changing LD Set Action Mode...................... ....................... ...................... ....................... .................. ..... III-311

9.3 Assigning a Logical Disk .................................................................................................................................. III-3139.3.1 Assigning an Additional Logical Disk ...................................................................................................... III-3139.3.2 Deassigning a Logical Disk....................................................................................................................... III-317

9.4 Starting the Access Control............................................................................................................................... III-3199.5 Access Control Screen....................................................................................................................................... III-321

9.5.1 Access Control Tab ................................................................................................................................... III-3219.5.2 Setting/Reference Tab ............................................................................................................................... III-3359.5.3 Access Control Setting Confirmation Screen............................................................................................ III-337

Chapter 10 Access Control for iSCSI Operations ....................................................................................................III-34010.1 Starting the iSCSI Setting Screen.................................................................................................................. III-34010.2 Setting Access Control for iSCSI ..................... ...................... ..................... ...................... ................... ......... III-342

10.2.1 Creating an LD Set for iSCSI/Changing Configuration of an LD Set for iSCSI.................. .................... III-34210.2.2 Deleting an LD Set for iSCSI.................................................................................................................... III-36710.2.3 Referencing Access Control Settings for iSCSI........................................................................................ III-36810.2.4 Authentication Settings ............................................................................................................................. III-37110.2.5 Access Restriction per Portal..................................................................................................................... III-373

Appendix A Specifications..................................................................................................................................................A-1 A.1 Number of Disk Arrays to Be Set................................. ...................... ...................... ................... ..................... .......A-1A.2 Number of LD Sets To Be Set in One Disk Array....................... ...................... ...................... ..................... ..........A-1A.3 Specified Number of Paths to Be Set for LD Set ...................... ....................... ...................... .................... .............A-2A.4 Specified Number of Paths to Be Set for Disk Array..............................................................................................A-2A.5 Number of LDs that Can Be Set in One LD Set............................. ..................... ...................... .................... ..........A-2A.6 Specification for Number of LDs and LUN............................................................................................................A-3A.7 Notes on Binding a Pool................... ...................... ....................... ...................... ..................... ..................... ..........A-3A.8 iSCSI .......................................................................................................................................................................A-3

Appendix B Configuration Setting Command ..................... ..................... ..................... ..................... .................... .........B-1B.1 Network Relief Setting Command (iSMnetconf)...... ..................... ...................... ..................... ..................... .........B-1B.2 Start and Stop of Network Relief Setting Command ..............................................................................................B-1

B.2.1 Examples of Displayed Options ................... ...................... ...................... ...................... .................... .............B-4B.2.2 Setting File.......................................................................................................................................................B-7

Appendix C RAID...............................................................................................................................................................C-1 C.1 RAID ..................... ...................... ..................... ...................... ..................... ...................... ...................... ................ C-1C.2 List of RANK-Configurable RAID Types ...................... ...................... ...................... ...................... ................... .C-13C.3 List of Pool-Configurable RAID Types .................... ..................... ..................... ..................... ..................... ........C-13

Appendix D Notes on Binding Logical Disks (1) .................... ..................... ..................... ..................... ..................... ......D-1D.1 Notes on Binding Logical Disks.................................... ....................... ....................... .................... ..................... ...D-1D.2 Recommended RAID Configuration.......................................................................................................................D-2


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D.3 Capacity of Configurations Other Than Recommended Ones .................... ....................... ....................... ..............D-3D.3.1 How Capacity Configured for Logical Disks is Regarded in a Disk Array ....................................................D-3D.3.2 Detailed Combination of RAID Configuration ..................... ..................... ..................... .................... ............D-6D.3.3 Method of Specifying Configuration Setting ..................................................................................................D-7

Appendix E Notes on Binding Logical Disks (2) .................... ..................... ..................... ..................... ..................... ......E-1E.1 Logical Disk Capacity ................... ....................... ...................... ....................... ................... ...................... ............. E-1E.2 Relationship between Pool and Logical Disk Capacity ................................... ...................... .................... ............. E-3

Appendix F Batch Setup File ..................... ..................... ..................... ...................... ..................... ...................... ............. F-1F.1 Nickname Setting File ...................... ...................... ...................... ...................... ...................... ..................... .......... F-1F.2 Pair Setting File ..................... ....................... ...................... ....................... ..................... .................... ..................... F-4

Appendix G ACOS-4 Resource Operation Guard ................... ..................... ..................... ..................... ...................... .. G-1

Appendix H License .................... ...................... ....................... ...................... ....................... .................. ...................... ..... H-1H.1 Apache log4j License ..................... ...................... ..................... ...................... ..................... ...................... .............H-1H.2 Flex License ............................................................................................................................................................H-7

H.3 OpenSSL License .................... ...................... ...................... ...................... ..................... .................... .....................H-8

Index ..................................................................................................................................................................Index-1


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Chapter 1 Storage Overview

I-2


This chapter provides an overview of disk arrays managed by iSM, a software product for operating and maintaining

disk arrays.. To understand the iSM functions and to use the iSM efficiently, read this chapter first, and then proceed to

Chapter 2.

111...111 DDDiiissskkkAAArrrrrraaayyy

The following is an outline of disk arrays that are managed by iSM.

(1) D series

Explosive proliferation of broadband in recent years has drastically increased types of transactions and

the amount of data such as e-mail and video content exchanged over the Internet. The most focused

storage problems in IT systems are the surge in the amount of data, complexity of management, and

great impact of disruption of operations. The D series, a next generation storage system employing

advanced virtual technology, has been developed to solve the storage problems every company might

have.

The D series offers the scalable D8 series, which allows for flexible expansion of capacity up to

petabyte level, and the D1 series, D3 series, and D4 series, the high cost-performance storage models

intended for small-to-medium-sized systems. This lineup allows the series to cater to user demands

from the entry level to the high-end level.

- D8 series

The D8 series has three advantages; non-disruptive scalabilitythat enables expansion of capacity of the

system that initially started as a small system at the installation up to petabyte level and improves the

performance linearly; manageabilitythat creates pools of physical resources in storage and configures

virtual storage to which necessary resources are assigned from the pools according to operation types;

and availabilitythat minimizes the system stop due to failure through multiplexed/ modularized

configuration.

- D3 series/D4 series

The D3 series and D4 series, a low-end disk array of the D series, achieve space saving (a total of up

to 12 controllers and PDs can be installed on 2U) and high availabilityby configuring redundancy for

main components (except the single controller model).

It also provides a function to replicate logical disks (DynamicDataReplication and

RemoteDataReplication (only for the FC model)) in and between disk arrays, which enables backup and

batch processing efficiently. This series offers two models that are equipped with different host

interface types: the model equipped with iSCSI and the model equipped with high-performance FC.


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I-3

With the iSCSI model, an inexpensive IP-SAN (Storage Area Network) can be set up by using Ethernet

equipment.

The iSCSI model provides a Dual Controller model and a Single Controller model. The FC model

provides a Dual Controller model.

The D3 series and D4 series support an additional parity disk for the high reliability RAID (RAID6,

RAID-TM)to maintain the redundancy against an error in a physical disk.

- D1 series

The D1 series, the entry model disk array intended for Windows and Linux of the D series, achieves

space saving(a total of up to 12 controllers and PDs can be installed on 2U) and high availabilityby

configuring redundancy for main components (except the single controller model).

It also provides a function to replicate logical disks (DynamicDataReplication) in a disk array, which

enables backup and batch processing efficiently. This series offers two models that are equipped with

different host interface types: the model equipped with iSCSI and the model equipped with

high-performance FC. With the iSCSI model, an inexpensive IP-SAN (Storage Area Network) can be

set up by using Ethernet equipment.

Both the iSCSI model and the FC model provide a Dual Controller model and a Single Controller

model.

Furthermore, the D1 series can support an additional parity disk for the high reliability RAID (RAID6,

RAID-TM)to secure the redundancy against an error in one physical disk.

(2) E series- E1 series

The E1 series, the entry storage dedicated to Windows/Linux/VMware, achieves high performance and

large capacity at low cost, and simplifies installation and management. The E1 series has two models: a

new model where iSCSI is mounted as a host interface and a traditional high-performance FC model.

With the iSCSI model, an inexpensive IP-SAN (Storage Area Network) can be set up by using Ethernet

equipment.


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(3) 4000 series

The 4000 series, high-end disk array, provides high scalability(a maximum of 1200 PDs and 960 PDs

can be installed on S4300/S4900 and S4100 respectively) high availability(redundancy for allcomponents) and stable performance. It also provides a function to replicate logical disks

(DynamicDataReplication and RemoteDataReplication) in and between disk arrays, which enables

backup and batch processing to be performed in parallel with the main function.

Furthermore, S4900 can support an additional parity disk for the high reliability RAID (RAID6,

RAID-TM)to secure the redundancy against an error in one physical disk.

(4) 3000 series

The 3000 series, mid-range disk array that supports mission critical tasks, realizes high scalability(up

to 2 extended cabinets can be connected to a basic cabinet) and high availability(all components are

redundant) and displays stable performance. It also supports most of functions

(DynamicDataReplication,, RemoteDataReplication, etc.) provided by the 4000 series, the high-end

disk array, which contributes to improvement of operational efficiency.

(5) 2800 series

- S2800/S2900

S2800/S2900, mid-range disk array, realizes high scalability(up to 16 disk enclosures can be

extended) and high availability(main components are redundant).

In addition, it supports functions equivalent to almost every solution (DynamicDataReplication,

RemoteDataReplication, etc.) provided by the 4000 series, the high-end disk array, thereby efficiently

performing business.

Furthermore, S2800/S2900 can support an additional parity disk for the high reliability RAID

(RAID6) to secure the redundancy against an error in one physical disk.


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(6) 2000 series

- S2100/S2200/S2300

S2100/S2200/S2300, mid-range disk array, realizes high scalability(up to 14 disk enclosures can beextended) and high availability(main components are redundant). It also provides a function to

replicate logical disks (DynamicDataReplication) in the disk array, which enables effective backup and

batch processing.

- S2400

S2400, mid-range disk array, realizes high scalability(up to 8 disk enclosures can be extended) and

high availability(main components are redundant). In addition, it provides a function to replicate

logical disks(DynamicDataReplication and RemoteDataReplication) in and between disk arrays, which

enables effective backup and batch processing.

Furthermore, this model can support an additional parity disk for the high reliability RAID (RAID6)

to secure the redundancy against an error in one physical disk.

- S2500

S2500, mid-range disk array, realizes space saving(one controller and maximum of 15 PDs may be

attached per 3U), high scalability(up to 8 disk enclosures can be extended) and high availability

(main components are redundant).

In addition, it provides a function to replicate logical disks(DynamicDataReplication and

RemoteDataReplication) in and between disk arrays, which enables effective backup and batch

processing.




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(7) 1000 series

- S1100/S1200/S1300

S1100/S1200/S1300, a low-end model disk array, realizes space saving(one controller and maximumof 15 PDs may be attached per 3U) and high availability(redundancy for main components).

- S1400

S1400, a low-end model disk array, realizes space saving(one controller and a maximum of 15 PDs

may be attached per 3U) and high availability(main components are redundant). In addition, it

provides a function to replicate logical disks(DynamicDataReplication) in the disk array, which




- S1500

S1500, a low-end model disk array, realizes space saving(one controller and a maximum of 15 PDs

may be attached per 3U) and high availability(main components are redundant). In addition, it

provides a function to replicate logical disks(DynamicDataReplication) in the disk array, which




- S1800AT/S1850AT

S1800AT/S1850AT, suitable model for backing up and archiving data, provides large capacity with

SATA disks (up to 16 disk enclosures can be added) at low cost.

It ensures high reliability and high availability (redundancy for main components) by adopting the

technologies (such as RAID6) proven in S2800, S2400, and other disk arrays.

This model provides a function to replicate a logical disk in the disk array and between disk arrays for

efficient backup.


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(8) 100 series

- S100

S100, entry model disk array designed for Windows/Linux, realizes space saving(one controller and amaximum of 15 PDs may be attached per 3U) and high availability(redundancy for main

components).

- S400

S400, entry model disk array designed for Windows/Linux, realizes space saving(one controller and a

maximum of 15 PDs may be attached per 3U) and high availability(main components are redundant).



- S500/S550

S500/S550, entry model disk array designed for Windows/Linux, realizes space saving(one controller

and a maximum of 15 PDs may be attached per 3U) and high availability(main components are

redundant (however, except the single controller model)).




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111...222 DDDiiissskkkAAArrrrrraaayyyCCCooonnnfffiiiggguuurrraaatttiiiooonnn

(1) Components

A disk array consists of Disk Array Controller (DAC) , where the components of control systems such

as host director, disk director and cache are, and Disk Enclosure (DE) , where two or more physical

disks controlled by DAC are.

Disk Array Controller(DAC)

Physical Disk (PD)

Disk Enclosure(DE)

Figure 1-1 Disk Array Configuration (D8 Series)

Disk Enclosure (DE)

Disk Array Controller (DAC)

Physical Disk (PD)

Figure 1-2 Disk Array Configuration (D1 Series/ D3 Series/ D4 Series)

Figure 1-3 Disk Array Configuration (S4900)

Disk Array Controller

(DAC)

Array Group 2

Basic Cabinet

Physical DiskPD

Disk

Enclosure(DE)

Physical Disk

(PD)

Array Group 1

Array Group 0

Extended Cabinet (up to 7 cabinets)

Array Group 3


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Figure 1-4 Disk Array Configuration (S4300)

Figure 1-5 Disk Array Configuration (3000 Series)

(up to 10 cabinets)

(up to 2 cabinets)

Array Group 2

Array Group 1

Array Group 2

Array Group 1

Array Group 0

Array Group 0


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Figure 1-6 Disk Array Configuration (2000/2800 Series, S1800AT/S1850AT)

Figure 1-7 Disk Array Configuration (100/1000 Series, S2500)

The D8 series disk array consists of Disk Array Controller and one or more disk enclosure. Up to 12 physical

disks (PDs) can be installed on a disk enclosure. A PD management group (PD group) is defined according to

the connectivity to a disk director (PDs connected to the same group are defined as one PD group). There is

no concept of array group supported by the 3000 and 4000 series described later.

The D1 series, D3 series, and D4 series disk array cabinets have a controller unit and a disk enclosure unit in

it. Up to 12 physical disks (PDs) can be installed on a controller unit. As a PD management group, PDs

connected to the same group are defined as one PD management group (PD group). There is no concept of

array group.

The cabinet that consists of Disk Array Controller and two or more disk enclosures in the 3000/4000 series

disk array is called Basic Cabinet (BC) while the cabinet with multiple disk enclosures only and connected

to a basic cabinet is called Extended Cabinet (EC). The 3000/4000 series disk array can install 10 or 15

physical disks (PDs) on a disk enclosure, and four disk enclosures are managed as one group (array group).

Each PD has an identification number allocated per PD management group (PD group), which consists of

four array groups mentioned above. By combining PD group number and PD position number, you can

identify where a given physical disk is located.

Disk Enclosure (DE)

Disk Array Controller (DAC)

Physical Disk (PD)


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I-11

In the same way, unique identification numbers are assigned to other components in a disk enclosure (shown

below) per controller unit. With these numbers users can identify components in the same disk enclosure.

Assignment of identification numbers depends on the number of components in the disk enclosure.

The 2800 series disk array is composed of Disk Array Controller (DAC) and one or more disk enclosures.

(There is no concept of basic cabinet and extended cabinet as in the 4000 series). It can install 15 physical

disks (PDs) on a disk enclosure. Only one PD management group (PD group) is defined in it (i.e., all physical

disks belong to one PD group). There is no concept of array group.

The 2000 series disk array is composed of Disk Array Controller (DAC) and one or more disk enclosures.

(This model does not have a concept of basic cabinet and extended cabinet as in the 4000 series. Disk Array

Controller and Disk Enclosure are integrated for S2500.) It can attach 10 or 15 Physical Disks (PDs) per disk

enclosure. PD management group (PD group) is defined depending on the connection relation to disk array

controller (PDs connected to the same group are defined as one PD group). There is no concept of array

group.

The 100/1000 series disk array cabinet has Disk Array Controller (DAC) and DE, which are in different

cabinets in the 2000 series, together. 15 Physical Disks (PDs) can be installed in Disk Array Controller

(DAC). Because there is not the concept of array group, the Physical Disks connected to the same group are

managed as one group (PD group).


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I-14

- S2800/S2900

PD

Battery Fan

SVPTEMP

ALM

Adapter Card Adapter Card

Back Board

Fan

TEMP

ALM

PDPD PD PD PD

Disk Array

Controller (DAC)

Disk Enclosure

Power Supply

HD (Host Director)

Ether Port for

Monitoring

HD (Host Director)

FC Port FC Port

Cache ModuleSVP

PCC UPS Port

Cache Module

Battery

Power Supply

Figure 1-10 2800 Series Disk Array Components


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I-15

- S2100/S2200/S2300

- S2400

PD

SVPTEMP

ALM


TEMP

ALM

PDPD PD PD PD

HD (Host Director) HD (Host Director)

FC Port FC Port

SVP

PCC UPS Port

Cache Module Cache Module

Battery BatteryFan

Power Supply

Disk Array

Controller (DAC)

Ether Port for

Monitoring

Fan

Power Supply

Disk Enclosure

Back Board

Figure 1-11 2000 Series (except S2500) Disk Array Components

PD

Battery Fan

SVPTEMP

ALM


Back Board

TEMPALM

PDPD PD PD PD

Disk Array

Controller (DAC)

Power Supply

Cache Module

HD (Host Director)

FC Port FC Port

HD (Host Director)

Ether Port for

Monitoring

Battery

Cache Module

Fan

Power Supply

Disk Enclosure


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I-16

- S2500

PD

SVP

TEMP

ALM

Back Board

Fan

PDPD PD PD PD

FC Port

Power Supply


FC Port

SVP

PCC UPS Port

Cache Module Cache ModuleBattery Battery Disk ArrayController (DAC)

Ether Port for

Monitoring

Figure 1-12 2000 Series (S2500) Disk Array Components


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I-17

- S100/S1100/S1200/S1300

- S400/S500/S550/S1400/S1500

PD

Battery

SVP

TEMP

ALM

Back Board

Fan

PDPD PD PD PD

FC Port

Power Supply

Cache ModuleBattery

Ether Port forMonitoring


FC Port

Disk Array

Controller (DAC)

SVP

PCC UPS Port

Cache Module

- S1800AT/S1850AT

PD

Battery Fan

SVPTEMP

ALM


Back Board

Fan

TEMP

ALM

PDPD PD PD PD

Disk ArrayController (DAC)

Disk Enclosure

Power Supply

HD (Host Director)

Battery

Ether Port for

Monitoring

HD (Host Director)

FC Port FC Port

Cache Module Cache Module SVP

PCC UPS Port

Power Supply

Figure 1-13 100/1000 Series Disk Array Components

Battery

SVP

TEMPALM

Back Board

Fan

PD

FC Port

Disk Array

Controller (DAC)

Power Supply

HD (Host Director)

Cache Module Cache ModuleBattery

FC Port

ETHER Port forMonitoring

HD (Host Director)

PDPDPDPDPD


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I-18

[D series logical block diagram]

- D8 series (with alternative paths and options)

Node 0


FC Port

Disk Director 2

(Option)

*1 In the D8 series, a node has two PD groups. A node is an aggregation of HDDs connected to the same disk array

controller.

*2 Hexadecimal digits in the brackets are PD numbers.

*3 DE denotes a disk enclosure.

Disk Director 1

FC Port

PDG

roup0

Alternative

path

PDG

roup1

PDG

roup0

PDG

roup1

Disk Director 3

(Option)

Disk Director 0

DE#00[00 0B]DE#01[10 1B]

DE#02[20 2B]DE#03[30 3B]

DE#04[40 4B]DE#05[50 5B]

DE#06[60 6B]DE#07[70 7B]

DE#08[80 8B]DE#09[90 9B]

DE#0A[A0 AB]DE#0B[B0 BB]

DE#0C[C0 CB]DE#0D[D0 DB]

DE#0E[E0 EB]DE#0F[F0 FB]

PD Group 0

DE#00[00 0B]DE#01[10 1B]DE#02[20 2B]DE#03[30 3B]

DE#04[40 4B]DE#05[50 5B]DE#06[60 6B]DE#07[70 7B]

DE#08[80 8B]DE#09[90 9B]

DE#0A[A0 AB]DE#0B[B0 BB]

DE#0C[C0 CB]DE#0D[D0 DB]

DE#0E[E0 EB]DE#0F[F0 FB]

PD Group 1

Figure 1-14 D8 Series Logical Block Diagram


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[D1 series/ D3 series/ D4 series logical block diagram (with alternative paths and options)]

- D1 series/ D3 series/ D4 series(with alternative paths)

Figure 1-15 D1 Series/ D3 Series/ D4 series Logical Block Diagram

*1 The D1 series, D3 series, and D4 series have one PD group.


*3 DE denotes a disk enclosure. DE#0 is integrated in the controller.

*4 PD group 0 and PD group 0 are the same PD group.

#0 #0Controller 0

DE#0[00 0B]

DE#1[10 1B]

DE#2[20 2B]

DE#3[30 3B]

DE#4[40 4B]

DE#5[50 5B]

D1 Series

PD Group 0

DE#0[00 0B]

DE#1[10 1B]

DE#2[20 2B]

DE#3[30 3B]

DE#4[40 4B]

DE#5[50 5B]

DE#8[80 8B]

DE#9[90 9B]

DE#A[A0 AB]

DE#B[B0 BB]

DE#C[C0 CB]

DE#D[D0 DB]

D3 Series/D4 Series

PD Group 0

Controller 1

FC Port/iSCSI Port

Alternative Paths

#1

(D3 series only)#1

(D3 series only)

PDGroup0

P

DGroup0

Controller Block

FC Port/iSCSI Port


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I-20

[2800 series logical block diagram (with alternative paths and options)]

- S2800/S2900 (with alternative paths and options)

Controller 1

Controller Block

Controller 0

FC Port FC Port

Option

DE#0[00 - 0E]

DE#1[10 - 1E]

:

:

:

DE#E[E0 - EE]

DE#F[F0 - FE]

PD group 0

*1 2800 series disk arrays have one PD group.




PD

Group0

Alternative Paths

PD

Group0

Option

Figure 1-16 2800 Series Logical Block Diagram


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I-21

[2000 series logical block diagram]

- S2100/S2200/S2300 (with alternative paths and options)

Figure 1-17 2000 Series (S2100/S2200/S2300) Logical Block Diagram

Controller Block

FC Port

DE#0[00 0E]

DE#1[10 1E]

DE#2[20 2E]

DE#3[30 3E]

DE#4[40 4E]

DE#5[50 5E]

DE#6[60 6E]

PD group 0

DE#10[00 0E]

DE#11[10 1E]

DE#12[20 2E]

DE#13[30 3E]

DE#14[40 4E]

DE#15[50 5E]

DE#16[60 6E]

PD group 1

*1 S2100, S2200, and S2300 disk arrays have two PD groups.*2 Hexadecimal digits in the brackets are PD numbers.


*4 PD groups 0 and 0 are the same PD group, and also PD groups 1 and 1 are the same PD group.

Controller 1

FC Port

PDG

roup0

Alternative Paths

PDG

roup1

PDG

roup0'

PDG

roup1'

OptionOption

Controller 0

Option


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I-22

[2000 series logical block diagram]

- S2400/S2500 (with alternative paths)

Figure 1-18 2000 Series (S2400/S2500) Logical Block Diagram

Controller Block

FC Port

DE#0[00 0E]

DE#1[10 1E]DE#4[40 4E]

DE#5[50 5E]

DE#8[80 8E]

DE#9[90 9E]

DE#C[C0 CE]

DE#D[D0 DE]

PD group 0

*1 S2400 and S2500 disk arrays have only one PD group.



*4 PD groups 0 and 0 are the same PD group.

Controller 1

FC Port

PDG

roup0

Alternative Paths

PDG

roup0'

Controller 0


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I-23

[100/1000 series logical block diagram (with alternative paths)]

- S100/S1100/S1200/S1300 (with alternative paths)

Figure 1-19 100/1000 Series (S100/S1100/S1200/S1300) Logical Block Diagram

*1 S100, S1100, S1200, and S1300 disk arrays have only one PD group.




Controller Block

DE#0[00 0E]

DE#1[10 1E]

PD group 0

Controller 0 Controller 1

FC Port FC Port

Alternative Paths

PDG

roup0'

PDG

roup0


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I-24


- S400/S1400(with alternative paths)

Figure 1-20 100/1000 Series (S400/S1400) Logical Block Diagram

DE#0[00 0E]

DE#4[40 4E]

DE#8[80 8E]

DE#C[C0 CE]

PD group 0





*5 S400 cannot be connected to DE#C.

Controller Block


FC Port FC Port

Alternative Paths

PD

Group0'

PDG

roup0


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I-25


- S500/S550(with alternative paths)

Figure 1-21 100/1000 Series (S500) Logical Block Diagram





*5 S500 cannot be connected to DE#9.

Controller Block

DE#0[00 0E]

DE#1[10 1E]

DE#5[50 5E]

DE#9[90 9E]

PD group 0


FC Port FC Port

Alternative Paths

PDG

roup0'

PDG

roup0


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- S1500 (with alternative paths)

Figure 1-22 100/1000 Series (S1500) Logical Block Diagram

*1 S1500 disk arrays have only one PD group.




*5 Up to 4DEs (60 PDs) can be connected to S1500.

Controller Block

DE#0[00 0E]

DE#1[10 1E]

DE#4[40 4E]

DE#5[50 5E]

DE#8[80 8E]

DE#9[90 9E]

DE#C[C0 CE]

PD group 0


FC Port FC Port

Alternative Paths

PDG

roup0'

PDG

roup0


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I-27


- S1800AT/S1850AT (with alternative paths)

FC Port

Controller Block

FC Port

DE#0[00 - 0E]

DE#1[10 - 1E]

:

:

:

DE#E[E0 - EE]

DE#F[F0 - FE]

PD Group 0

Controller 1

PD

Group0

Alternative Paths

PDG

roup0

Controller 0

Figure 1-23 100/1000 Series (S1800AT/S1850AT) Logical Block Diagram

*1 S1800AT and S1850AT disk arrays have only one PD group.




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The following table shows disk array components.

Table 1-1 Component List (1/2)

Component (Abbreviation) Configuration Devices(Abbreviation)

Description

Host Director (HD) Host interface control and cache module

control device. One to six ports are mounted ina director.

Replication Director (RD) Control part of DynamicDataReplication andRemoteDataReplication function. Two portsare mounted in single director.

Disk Director (DD) Disk array control device. Four ports aremounted in single director.

Cache Module Card (CHE) Cache memory

Service Processor Card (SVP) Processor that provides interfaces

(maintenance PC, Ether, modem) for powersupply control and maintenance.

Temperature Alarm

(DAC_TEMP_ALM)

Temperature abnormality detection part withtemperature sensor, in DAC (Disk ArrayController).

Panel

(PANEL)

Exterior panel with a display showing diskarray status and switches for power on and off.

Fan

(DAC_FANU/FANL)

Cooling fan to maintain the constanttemperature inside of the controller. There are

two types: Upper and Lower.

Power Supply

(DAC_PS)

Power supply part in DAC.

Battery Backup Unit

(DAC_BBU)

Part to supply power for retaining cachemodule data in DAC.

Basic Cabinet Junction Box

(BC_JB)

Part to connect AC power cable in the basiccabinet. Power is supplied to cabinet

components through this part.

Back Board

(DAC_BB)

Back board connecting components

(configuration devices) in DAC.

Battery Back Board

(BBU_BB)

Back board to which batteries are connected

Power Control Card (PCC) Processor that provides interface (SCBI) forpower control.

DAC Integrated Adapter Card

(ADP(S/S):AdapterCard(SAS/SerialATA)

Adapter card to connect PDs and HDs/DDs

installed in the cabinet.

Extended Battery

(EXT_BBU:Extended_BatteryBackupUnit)

Extended power supply unit to retain the cache

module data in the controller.


(DAC)

Local Switch

(LSW)

Switch for connection between cards and

nodes such as HD/DD/CHE.


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Table 1-1 Component List (2/2)

Component (Abbreviation) Configuration Devices(Abbreviation)

Description

Power Supply

(DE_PS)

Power supply part in DE (Disk Enclosure).

Fan

(DE_FAN)

Cooling fan in DE to maintain the constanttemperature inside of the unit.

Adapter Card

(DE_ADP)

Adapter card for connection between PD

and DD.

Adapter Card

(DE_ADP(SATA))


and DD (for serial ATA disks only).

Adapter Card (DE_ADP(S/S):

DE_AdapterCard(SAS/SerialATA))


and DD (for SAS/serial ATA disk).

Extended Cabinet Junction Box

(EC_JB)

Part to connect AC power cable in the

extended cabinet. Power is supplied tocabinet components through this part.

Temperature Alarm

(DE_TEMP_ALM)

Temperature abnormality detection partwith temperature sensor in DE.

Disk Enclosure

(DE)

Back Board

(DE_BB)

Back board connecting each component(configuration devices) in DE.

- Pool Virtual medium constituting RAID by

combining physical disks.

- Physical Disk (PD) Physical disk

- Logical Disk (LD) Logical disk (disk from operation host

side)


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Chapter 2 Overview of Disk Array Configuration Setting

I-30

Chapter 2 Overview of Disk Array

Configuration SettingThis chapter describes an overview of the disk array configuration setting.

The disk array configuration setting is a function for setting the configuration that is used when a disk array is installed

for the first time and when physical disks are added. This operation can be performed by using a GUI from the iSM

client.

Figure 2-1 Configuration Setting Outline

Operation Administrator

Configuration Display ScreenStorage Manager

Logical Disks

Disk ArrayController DAC

Disk Enclosure (DE)

PhysicalDisks

Disk Array


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In a disk array, virtual medium that constitutes RAID is set up by combining multiple physical disks. The

virtual medium space is divided (or partitioned) to configure logical disks. Data on the logical disks is stored

in the areas of physical disks associated with the partitions on the virtual medium in which the logical disks

are configured.

The virtual medium is called a pool or RANK, and it supports different logical disk configurations depending

on the disk array.

Pool

The following disk arrays with pool:

S400/S1400/S1800AT/S1850AT/S2400/S2800/S2900/S4900

S500/S550/S1500/ S1850AT/S2500/S2900

D series

In the disk arrays indicated above, multiple physical disks combined to make up a virtual medium for

RAID. The logical disks usually belong to one pool, and the required amount of space is assigned from the

pool.

RANK

The following disk arrays other than the disk arrays with pool:

S100/S1100/S1200/S1300/S2100/S2200/S2300

S3100/S3300/S4100/S4300

In the disk arrays indicated above, multiple physical disks put together to make up a virtual medium for

RAID is called RANK. Areas on RANK are controlled by using a continuous address space.

There are two types of pools: basic pool and dynamic pool. They function in different manners.


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The basic pool is a virtual medium, which manages the space on the pool using a continuous address space.

As in the case of RANK, continuous spaces on the pool are assigned to the logical disks.

Note that additional features such as pool capacity expansion or logical disk capacity expansion are not

available on the basic pool. In addition, the logical disks bound on the basic pool cannot be used for an

operation until the format is completed. (The logical disks can be used immediately after they are configured

on a disk array if it supports the quick format function.)

Figure 2-2 Logical Configuration of Disk Arrays (Basic Pool)

Quick format:

This formatting method initializes (deletes) only a part of the logical disk and makes it available quickly. It

is available only for the RAID types and platforms supporting the quick format.

(When you are using disks such as those containing important data, you can initialize (delete) the data by

the normal formatting.)

The tables below list pools and the number of physical disks that can be configured on a disk array

supporting pool.

- Basic pool (No.1)

Number of Physical DisksRAID

TypeDisk Array

2 4 5 6 8 10 12 14 16 20

RAID1 - - - - - - - - -

RAID5 - - - - - - - - -

RAID10 - - *1 *1 *1 *1 -

RAID50

Disk array withpool (except Dseries)

- - - - - - - -

: Available -: Unavailable

*1: Unavailable for S400/S1400/S2400/S2800.

Logical Disk Configuration of Basic Pool

PD00 PD01 PD02 PD03 PD04

LD00LD01LD02LD03

Basic Pool


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- Basic pool (No.2)

Number of Physical DisksRAID

Type Disk Array 2 3 4 5 6 7 8 9 10 11 12 14 16 20

RAID1 - - - - - - - - - - - - -

RAID3 - - - - - - - - - - - -

RAID3DP - - - - - - - - - - - -

RAID5 - - - -

RAID10 - - - - - - -

RAID50

D series

- - - - - - - - - - -

: Available -: Unavailable


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The dynamic pool is a virtual medium, which manages the space on the pool using a virtual storage space.

Like block management in a file system, the dynamic pool manages used space and unused space. When

configuring logical disks, separate unused space from the pool according to the required capacity, then assign

the physical disk space corresponding to the logical disk space.

Using the dynamic pool eases the limit on the number of physical disks constituting the pool and enables

flexible configurations. With the dynamic pool, additional features such as pool capacity expansion and

logical disk capacity expansion become available. Logical disks bound on the dynamic pool can be used for

operations immediately after they are bound.

Figure 2-3 Logical Configuration of Disk Arrays (Dynamic Pool)

Disk arrays supporting pool provide the dynamic pool function

The dynamic pool function creates a virtual storage pool from a group of physical disks on the disk array.

Logical disks are created by allocating storage capacity required for operations from the unused space of the

pool. If the storage capacity becomes short, you can add physical disks one by one as required to the pool to

expand the unused space of the pool. The added unused space of the pool can be used to bind a new logical

disk or expand the existing logical disk capacity, while retaining the current data. You can also put back

logical disks no longer needed to the pool to extend the unused space of the pool.

The dynamic pool function helps to manage the capacity of the storage efficiently and sharply cuts costs of

increasing storage capacity. It also helps to flexibly support any configuration changes or expansion of the

storage due to newly added transactions or modification in transactions.

Logical Disk Configuration of Dynamic Pool

PD00 PD01 PD02 PD03 PD04

LD00

LD01

LD02

LD03

... PDnn

D namic Pool


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Figure 2-4 Overview of the Dynamic Pool Function

The dynamic pool function provides the following benefits:

Reduction in the cost of storage expansion

When some additional storage space is required due to an addition of new transactions and so forth, you

can add physical disks one by one as required to configure new logical disks or expand the existing logical

disk capacity. This means that you only need to add physical disks of needed capacity, which reduces costs

of storage expansion.

Better flexibility of storage configuration

If the amount of data to be handled increases and the storage capacity becomes short, you can expand the

logical disk space, keeping the existing data in the logical disks. You can also return logical disks no longer

needed to the pool to reserve the unused space of t

NEC IS007 ISM6 2 Config Setting Tool Users Manual GUI

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