HP EVA Storage Replication Adapter Software for VMware vCenter SRM Administrator Guide

4 Recovery and failback
Recovery
Recovery occurs when an SRM recovery plan is configured with SRM protection groups that use
replicated EVA/P6000 vdisks as a datastore is executed. A recovery plan can be used for DR or
planned migration of VM between data centers.
During normal operation, the replication path is from a protected site (local site) to a recovery site
(remote site). If a failure occurs at the local site (due to hardware failure or an entire site loss) the SRM
recovery plan can be executed, which calls the SRA to reverse replication direction from the recovery
site to the protected site. With HP P6000 EVA SRA Software version 5.0 and SRM, the failover process
is an automated feature and the process is executed using a recovery plan located at the recovery
site.
NOTE:
HP recommends that you set the DR group write mode to Synchronous before performing a planned
failover. This ensures that:
• The data is current.
• The failover does not result in full-copy (reverse copy) from secondary site to primary site vdisks.
NOTE:
If HP P6000 EVA SRA Software version 5.0 is called by SRM during an entire loss of the primary
site, HP recommends that you click Refresh from within the Storage Administrator Portal.
Failback
Failback is the process of setting the replication environment back to its original state at the protected
site (local site) prior to failover. Failback can be managed as a normal server migration process.
However, managing the failback process with SRM is an automated process once the old protected
site is restored and SRM is used to reprotect recovered protection groups.
HP P6000 EVA Storage Replication Adapter Software for VMware vCenter SRM version 5.0 31