Highly Available Unicenter Solutions -A High Level Summary Draft – Last Revised June 9, 2006.

Highly Available Unicenter Solutions

- A High Level Summary

Draft – Last Revised June 9, 2006

© 2005 Computer Associates International, Inc. (CA). All trademarks, trade names, services marks and logos referenced herein belong to their respective companies.

Glossary

The following terms and abbreviations are used in this presentation:

- “HA” = Highly Available

- “USD” = Unicenter Service Desk

- “eIAM” = CA eTrust Embedded Identity and Access Management

- “MSCS” = Microsoft Cluster Server

- “Cluster Name” = Network name associated with the cluster group

- “NSM” = Unicenter Network System Management

- “DSM” = Unicenter Desktop Server Management


Objectives

- This presentation provides a high level overview of Unicenter NSM, DSM and USD Highly Available Solutions.

- The focus of this presentation is Microsoft Cluster (MSCS). Brightstor High Availability Option and HA for the Unix platforms is outside the scope of this presentation.

- There are other documents that discusses Brightstor High Availability implementation for Unicenter NSM and USD

Unicenter NSM


Unicenter NSM

- Release 11.0 supports Ingres MDB

- Release 11.1 supports SQL 2000 and SQL 2005 MDB

- Provides out-of-box Highly Available solution for Windows Platform only


Unicenter NSM

- If NSM install is carried out in a cluster environment, it will automatically detect the environment and present the HA option.

- Not all components are HA

- If installing in an HA environment, the components that are not HA are not displayed for selection


HA Components for NSM r11.1

This shows NSM r11.1 components which are HA.

Note that Enterprise Management – Alert subcomponent is not HA-compliant

Unicenter DSM


Unicenter DSM r11.1

- Release 11.1 provides SQL 2000 and SQL 2005 support

- HA support is targeted for future release

- HA SQL MDB can be created from DSM media, however, if the MDB Server fails over, restart of CAF service is required (this has been corrected in 11.2 release)


Unicenter DSM HA MDB

- There are two documents describing this – each supporting a different scenario:

- First scenario documents installation of DSM in a non-HA environment. Then the database is first detached then attached it to the SQL instance which is HA. This scenario is ideal for moving non- HA MDB to HA MDB

- Second scenario documents installation of DSM HA MDB in a cluster environment.

Unicenter Service Desk


Unicenter Service Desk (USD)

- USD HA is targeted for future release

- Several documents available in the Implementation Best Practices “Fault Tolerance” section that describe different scenarios on how to install various USD components in an HA environment


Scenario #1

- In this scenario, HA SQL MDB is installed from USD media, with the Primary Server and eIAM installed on non-HA Server

- Install Remote Components without eIAM on cluster nodes

- Install non-HA Primary Server with eIAM on a different server which is not part of any Cluster


HTT

PS

Por

t 443

USD Secondary Server

MDB

Database Server

HT

TP

Por

t 80

`

Object Manager

Object Manager

WebEngine

WebEngine

Object Manager

WebEngine

Object Manager

WebEngine

SQL Remote Client Port 1433

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HT

TP

Por

t 808

0

SLUMP Port 2100

250-300Concurrent connections


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Cluster Node ACluster Node B

USD Primary Server and eIAM

Database Server

Sql_AgentSql_Agent

Sql_Agent

Scenario #1

MSCS Cluster


References

- Review “Best Practices for Implementing Unicenter Service Desk r11.1 in an HA MSCS Environment”

- Part 1 – Install remote components without eIAM

- Part 2 – Install non-HA Primary Server with eIAM


Scenario #2

- In this scenario, HA SQL MDB is installed from USD media

- HA Primary Server is installed on the same cluster but in different cluster group

- Non-HA eIAM is installed without MDB on a different server


Scenario #2

- Install Remote Components without eIAM on the active node only. No requirement to install on the other cluster nodes

- Install non-HA eIAM without MDB on a different server. This requires special considerations

- Install HA Primary Server on the same cluster but different cluster group


Scenario #2 – Active Modes

- Primary Server and MDB active on different cluster nodes. This is desirable and normal mode

- Primary Server and MDB active on the same cluster node. This would be the case if second cluster node is lost

- Primary Server and MDB active on different cluster nodes (i.e., active nodes have been swapped around)


HA - Primary Server and MDBShows Primary Server and MDB active on different cluster nodes but on the same cluster

HTT

PS

Por

t 443


USD Primary Server

MDB

Database Server

HT

TP

Por

t 80

`

Object Manager Object

Manager

WebEngine Web

EngineObject

ManagerWeb

Engine

Object Manager

WebEngine


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P P

ort 8

080

SLUMP Port 2100



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eIAMNon HA

eIAM Server

MSCS Cluster


References

- Review “Best Practices for Implementing Unicenter Service Desk r11.1 in an HA MSCS Environment” presentation series:

- Part 1 – Install remote components without MDB

- Part 2 – Install non HA eIAM without MDB

- Part 3 – Install HA Primary Server


Scenario #3

- In this scenario,

- Install HA SQL MDB with eIAM from USD media

- Install HA Primary Server on the same cluster but different cluster group

- The key difference between scenario #2 and scenario #3 is that, in this scenario, eIAM is also installed on the same cluster


Active - Active This shows Primary Server and MDB active on the different cluster nodes

HTT

PS

Por

t 443


USD Primary Server

MDB

Database and eIAM

Server

HT

TP

Por

t 80

`

Object Manager Object

Manager

WebEngine Web

EngineObject

ManagerWeb

Engine

Object Manager

WebEngine


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P P

ort 8

080

SLUMP Port 2100



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MSCS Cluster

Highly Available Unicenter Solutions -A High Level Summary Draft – Last Revised June 9, 2006.

Documents

unicenter nsm slide

unicenter dsm slide

unicenter dsm ha mdb

ha components

unicenter nsm release

hacompliant slide

ha option

release slide