HP StorageWorks P9000 Virtualization Adapter Administrator Guide (5697-0680, October 2010)

Failover recovery
During recovery, SRM executes a recovery plan. When SRM reaches the Prepare Storage step in the
recovery plan, it provides the LUN information needed for failover to the P9000 Virtualization Adapter.
The failover sequence is:
• SRM makes a request to the P9000 Virtualization Adapter to do failover to replicated LUNs on a
remote (recovery) array.
• The P9000 Virtualization Adapter connects to an RAID Manager instance and requests replicated
Continuous Access S-VOLs on the recovery array.
• The P9000 Virtualization Adapter looks for and checks that Continuous Access S-VOLs are members
of data replication groups, and then executes horctakeover to make them read and write S-
VOLs.
• The P9000 Virtualization Adapter provides information and performs failover operations defined
in SRM failover recovery plans, and returns the following information:
• Replicated key and Continuous Access S-VOLs and IDs: LDEV number and LUN WWN
• CT group IDs for replicated LUNs
NOTE:
CT Group IDs for replicated LUNs are supported in Business Copy.
• SRM maps LUNs with datastores using the replicated keys and LUN WWN, and then moves all
resources to the recovery site.
NOTE:
During initial setup, replicated LUNs need to be presented to both the protected and recovery ESX
hosts.
Local configuration
Figure 1 shows the local configuration for the P9000 Virtualization Adapter on a Windows machine.
The Virtual Center server (VIC), SRM, and P9000 Virtualization Adapter are configured on Windows
2003.
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