Planning Failover; Using The Volume Failover/Failback Wizard; Converting A Primary Volume To A Remote Volume - HP StorageWorks P4000 User Manual

Planning failover

To achieve failover, consider the following points:
The location and structure of management groups and clusters
Configuration of primary and remote volumes, snapshots, and scheduling snapshots
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 correspond-
ing 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
StorageWorks P4000 SAN Solution user guide or online help.
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 CLIQ The
SAN/iQ Command-Line Interface User Manual and the sample scripts available at
www.hp.com/go/P4000downloads.

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 view, select the volume that you want 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
volume" on page 35.
34 Using Remote Copy
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"Using failover to remote