10.5 HP StoreVirtual Storage Remote Copy User Guide (AX696-96247, March 2013)

• Configuration of application servers and backup application servers
• Task flow for failback (resuming production after failover)
• If a volume is part of a volume set, typically you want to fail over each volume using its
corresponding snapshot. To see associated snapshots, select a snapshot, click the Details tab,
and review the Snapshot Set field. For more information about volume sets and snapshot sets,
see the HP StoreVirtual Storage User Guide.
Using scripting for failover
Application-based scripting provides the capability for creating, mounting, and deleting snapshots
using scripts. Remote Copy can be scripted as well. Remote snapshots and scheduled remote
snapshots can be created and managed using scripts. For information about scripting, see the HP
StoreVirtual LeftHand OS Command Line Interface User Guide and the sample scripts available
at:
http://www.hp.com/go/StoreVirtualDownloads
Using the Volume Failover/Failback Wizard
Changing the roles of primary and remote volumes may be necessary during failover and failback.
Move your primary volume either as part of a failover/failback scenario or as part of a planned
move. The Volume Failover/Failback Wizard takes you through the necessary steps to move a
primary volume to an existing remote volume, and to make the existing remote volume to an acting
primary volume.
Later, when failing back or restoring operations in a planned move, resynchronize data between
the acting primary and the recovered, or newly configured, production site primary volume.
NOTE: When failing over a primary volume, the volume must have a remote copy relationship
for the wizard to be available.
Converting a primary volume to a remote volume
The system allows you to convert a primary volume into a remote volume. First, the system takes a
snapshot of the primary volume to preserve the existing data that is on the volume. Next, the
primary volume is converted to a remote volume.
1. In the navigation window, select the volume to convert.
2. Right-click the volume, and then select Failover/Failback Volume.
3. Click Next.
4. Select the reason you are failing over the volume.
Use the first choice if your primary volume is available and you are planning a preemptive
move of the primary volume. For the steps to use the second choice, see “Using failover to a
remote volume” (page 28).
5. Select To move the primary volume and click Next.
6. Perform one of the following actions, depending upon the connection type of the volume:
• iSCSI—Disconnect the iSCSI sessions, if any are displayed, and then click Next
• Fibre Channel—If the volume has any active paths, unassign the volume from Fibre Channel
servers, and then click Next.
7. Enter a name and a description for the snapshot to be taken of the current primary volume.
This snapshot preserves the existing data on the volume.
8. Click Next.
9. The final step is to make the remote volume into an acting primary volume.
This acting primary volume connects to application servers in order to maintain business
continuance or accomplish disaster recovery.
Using the Volume Failover/Failback Wizard 27