1 © 2008 DataCore Software Corp. — All rights reserved © 2008 DataCore Software Corp Virtual Disks in a Mechanical World Made fast, reliable, flexible.
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1© 2008 DataCore Software Corp. — All rights reserved © 2008 DataCore Software Corp
Virtual Disks in a Mechanical WorldVirtual Disks in a Mechanical World
Made fast, reliable, flexible & cost-effective by softwareMade fast, reliable, flexible & cost-effective by software
2© 2008 DataCore Software Corp. — All rights reserved 2
Are Your Disks Hurting?
Age quickly Fail catastrophically Never fast enough Constantly out of space Painful to restore Costly to upgrade Agonizing to migrate
3© 2008 DataCore Software Corp. — All rights reserved 3
Work-Arounds
Excess capacity RAID sets Front-end controllers Caches Online diagnostics Frequent backups Off-site copies
―Narrow Scope―Manufacturer, Model# and O.S. Dependent
Expensive, Time Consuming &Much Throw-away
4© 2008 DataCore Software Corp. — All rights reserved 4
LoadBalancing
CentralizedManagement
High-speedCaching
RemoteReplication
ThinProvisioning
Virtual DiskPooling
RAIDStriping
Manufacturer-Independent SAN-wide Features
Synch Mirroring(High-Availability)
OnlineSnapshots
Virtual DiskMigration
ContinuousData Protection
& Recovery
5© 2008 DataCore Software Corp. — All rights reserved 5
Not-so-perfect disk drives behave “Ideally”
Fast Reliable Shareable Easy to back up,
maintain & upgrade Never grow old
“Virtual” Disks
6© 2008 DataCore Software Corp. — All rights reserved 6
Two Software Products to Choose From
Pools up to 32 TBs Runs on single server or
highly-available server pair Can run in a Virtual MachineSANmelody™
SANsymphony™
For a typical iSCSI or Fibre Channel SAN:
For Larger SANs: Scales indefinitely across multiple
tiers of devices, including high-end storage systems
N+1 redundant Superset of advanced services
7© 2008 DataCore Software Corp. — All rights reserved 7
Windows, Unix, Linux, NetWare, MacOs,Virtual Machines & Hypervisors
IDE,SCSI, SATA,SAS,FC, iSCSI, etc.
Hardware Flexibility & Future-proofingSoftware Adapts to Change! Perpetually Yields Better Performance &
Value
SAN
Windows servers inspecialized role
iSCSI/Ethernetor Fibre Channel
9© 2008 DataCore Software Corp. — All rights reserved 9
Case In Point
Customer Challenge:$200,000 budgeted for virtual infrastructure. Surprised to learn that SAN alone cost over $190K
Solution: Business Continuity within budget using DataCore
300 Users SQL Server, Exchange 40 App Servers Windows VMs 10TB
Police Station
Co-location
10 Miles
10© 2008 DataCore Software Corp. — All rights reserved 10
Desktop, App, Server & Storage Virtualization
Storage virtualization creates manufacturer-independent virtual disk pools
Disk & SAN Hardware
Cache, Mirror, Fail-overVirtual DisksVirtual DisksVirtual Disks
Replicate
Disk & SAN Hardware
11© 2008 DataCore Software Corp. — All rights reserved 11
Before Server Virtualization: Physical Isolation
~30 Users
~35 Users
~20 Users
~30 Users
~15 Users
Few people depend on each physical resource
Hardware changes more confined
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5X MoreUsers
After: Concentrated Workloads
Physical Server
Virtual
Machines
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5X MoreWorkload
Result: Pronounced Dependency on Storage
Magnifies impact of: I/O Bottlenecks Interruptions
Physical Server
Virtual
Machines
Shared Resources
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Take Advantage of Newly Freed Resources
VirtualServer Pool
VirtualSAN
Main Computer Site DisasterRecovery
Site
VirtualDisk Pool
15© 2008 DataCore Software Corp. — All rights reserved 15
High Availability & Disaster RecoveryMade Practical
Known-good copy
VirtualServer Pool
VirtualSAN
Main Computer Site
DisasterRecovery
Site
VirtualDisk Pool
AutoFailover &Failback
AutoReplicate
16© 2008 DataCore Software Corp. — All rights reserved 16
Fully Redundant & Remotely Replicated
Profile• 1000+ Users• 130+ App Servers• SQL, Oracle, Office• ESX, Linux• Microsoft Cluster• 125TB Pool• 4 EMC CX Arrays• 2 EMC DMX Arrays
Customer ChallengeBusiness Continuity for regulatory compliance & data retention
17© 2008 DataCore Software Corp. — All rights reserved 17
Clusters Spread Across Two Campuses
Profile • 1000+ Users• 100+ App Servers• Oracle, SQL,
PACS, Office• ESX, Linux• Microsoft Cluster• 138TB Pool• IBM FasT Arrays
Customer ChallengeEliminate storage-related interruptions despite 100% annual capacity growth
18© 2008 DataCore Software Corp. — All rights reserved 18
Get the Most From Your Storage
Fullest Utilization
Highest Availability
19© 2008 DataCore Software Corp. — All rights reserved 19
Call on Us When …Virtualizing Servers & Desktops• Can’t tolerate shared storage
failures• Poor performance from I/O
bottlenecksUpgrading Storage• Running out of disk space• Must migrate to new equipment &
SANs
Shaping Business Continuity Plan• Concerned about downtime &
disasters• Anxious to protect online assets
22© 2008 DataCore Software Corp. — All rights reserved 22
Virtual Disk Pooling
Create virtual disks of desired sizes
Expand capacity without downtime
Add different types of disks even from different vendors
Use what you paid forSANsymphonySANmelody
Consolidate like or unlike disk resources
≤32 TB >> Petabytes
23© 2008 DataCore Software Corp. — All rights reserved 23
High-Speed Caching
Accelerates disk I/O response from existing storage
Uses CPUs and memory from general purpose servers as powerful, inexpensive cache
Anticipates next blocksto be read & groups writes to avoid waiting on disks
SANsymphonySANmelody
Speeds up performance
24© 2008 DataCore Software Corp. — All rights reserved 24
Load Balancing
Overcome typical storage-related bottlenecks
Spread load on physical devices using different channels for different virtual disks
Automatically bypassesfailed or offline channels
SANsymphonySANmelody
Improve response and throughput
25© 2008 DataCore Software Corp. — All rights reserved 25
Thin Provisioning
Appears to computers as very large drives (e.g. 2 TB disks)
Takes up only space actually being written to
Dynamically allocates more real space when required
Reduces need to resize LUNsSANsymphony
Just enough space, just-in-time
SANmelody
26© 2008 DataCore Software Corp. — All rights reserved 26
RAID Striping
Circumvents drive failures
Spreads I/O across multiple spindles
Offloads RAID 0 & 1
Supports popular RAID devices in pool
SANsymphonySANmelody
Better protection & performance
27© 2008 DataCore Software Corp. — All rights reserved 27
Synchronous Mirroring
SANsymphony
Real-time I/O replication for High-Availability
Eliminates SAN or storage as a single point of failure when combined with multipath I/O drivers
Enhances survivability using physically separate nodes
Updates two independent copies simultaneously
SANmelody
N+1Redundancy
28© 2008 DataCore Software Corp. — All rights reserved 28
Virtual Disk Migration
SANsymphony
Transparently move contents from one disk to another
Allows non-disruptive hardware disk upgrades for mirrored volumes
Clears & reclaims space occupied by original
SANmelody
29© 2008 DataCore Software Corp. — All rights reserved 29
Online Snapshots
Recover quickly atdisk speeds to known good state
Eliminate back-up window
Provide “live” environment for analysis, development& testing
SANsymphonySANmelody
Capture Point-in-time Images
30© 2008 DataCore Software Corp. — All rights reserved 30
Continuous Data Protection & Recovery
Dial back to restore an arbitrary point in time
Logs and timestampsall I/Os
No need to quiesce or interrupt applications SANsymphonySANmelody
Return to any point-in-time withouttaking explicit backups
31© 2008 DataCore Software Corp. — All rights reserved 31
Remote Replication
Perfect for disaster recovery or business continuity
Only needs a basic IP connection to secondary site
Bi-directionalSANsymphonySANmelody
Keep distant copies without impacting local performance
1-to-ManyMany-to-1
32© 2008 DataCore Software Corp. — All rights reserved 32
SAN-wide Centralized Management
Automates laborious, repetitive tasks
Intuitive to operate
Universal tools work across like or unlike devices
SANsymphonySANmelody
Control and monitor all SAN resources from one console
2 Nodes SAN-wide
33© 2008 DataCore Software Corp. — All rights reserved 33
Analysis & Reporting
Reveals SAN resource consumption & performance trends
Assists with capacity planning, utilization & quality of service decisions
Export results to 3rd party tools for further analysis,charge-back & billing
SANsymphony
Tracks & charts long-term SAN behavior
SANmelody
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