VIOLIN SYSTEMS 7700, Installation Manual

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Appendix F - Configuring Stretched Cluster and Tiebreaker
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7700 Flash Storage Platform Installation Guide 7.6.3.x
530-0267-00 Rev 02
Configuring a Stretched Cluster
Prior to configuring a stretched cluster, you must complete the following tasks:
•
Identifying Northbound and Southbound Ports on 7700 FSP Controllers on page 149
•
Disabling Target Mode on the Southbound Ports on page 149
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Inspecting the Discovered Devices on page 149
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Renaming LUNs and Minimum Stretched Cluster LUN Requirements on page 149
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Creating Local and Remote Storage Pools on Site-A on page 150
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Creating a Configuration Repository/Mirror on Site-A on page 151
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Creating Local and Remote Storage Pools on Site-B on page 151
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Creating a Configuration Repository and Mirror on Site-B on page 151
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Enabling HA on page 151
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Checking Failover Status on page 152
Note:
If you intend to create a stretch cluster, it is recommended that you first read Overview:
Stretched Clusters on page 145 and Enabling a Stretched Cluster on page 152, prior to using the
HA CLI commands. For specific details about CLI commands, refer to the Concerto Command Line
Interface Reference .
Figure F.1 Example of a 7700 FSP stretched cluster Configuration Repository (CR) Best Practice
Tip:
When creating a 7700 FSP stretched cluster configuration, each 7700 FSP Controller needs
to know the management IP addresses for the two Fibre Channel switches, and each 7700 FSP
Controller needs a second IP address in the same subnet of the management IP address,
which is used for cluster heartbeat monitoring (and this must be accessible from the 7700 FSP
Controller at the remote site).