3PAR Replication Adapter 4.x for VMware vCenter Site Recovery Manager Implementation Guide

9 Failback

Failback is a reverse of a failover and a process in the VMware vCenter Site Recovery Manager

when the recovery site virtual infrastructure is replicated back to the protected site. During failback,

the original recovery site acts as the protected site and the original protected site acts as the

recovery site.

Preparation before Failback

1. At the new protected site:

a. Delete the failover recovery plan.

b. Optional. It is assumed that the appropriate array replication prerequisites for the new

protected site to the new recovery site is established that the datastore(s) containing

failover virtual machines that are going to participate in failback. It not, add virtual

volumes corresponding to datastore(s) in the Remote Copy volume group by issuing the

admitrcopyvv command on the storage system.

Refer to HP 3PAR Remote Copy User Guide for additional information on how to setup

HP 3PAR Remote Copy.

c. Establish appropriate connection between two sites, configure Inventory Mappings and

Array Managers.

d. Create the protection groups.

2. At the new recovery site:

a. Delete failover protection group.

b. Remove failover virtual machines from the inventory.

c. Run showvlun command at the new recovery site HP 3PAR Storage System to see the

current LUN exposure and ensure that at least one active LUN is visible (an exposure can

be made to any host). If a LUN is not exposed, you must create at least one LUN via

createvlun command.

d. Rescan the storage adapters.

e. Create a failback recovery plan at the new recovery site.

Procedure after Failback

At the new protected site, start and sync the Remote Copy volume group.

# startrcopygroup srm_1

# syncrcopy srm_1

Synchronization request issued for group srm_1 task ID = 383 384 385 386 387

388

Cleanup after Failback

1. At the new protected site, delete the failover recovery plan.