Performing Global Copy failover processing to the A volumes

Complete this task to perform failover processing from A volumes to B volumes so that the A volumes become the primary volumes and B volumes become the secondary volumes. This is the fifth step in the failback recovery process.

The resynchronization of the A volumes and B volumes must be completed (no out-of-sync tracks) before you can proceed with this task.

You must issue this restore failover request on the Global Copy volumes pair to reestablish the extended distance relationship and create the A Volume to B Volume Global Copy relationship.

Perform the following step to complete failover processing from the A volumes to the B volumes. The example commands in this task are shown in two formats. The first format shows the type of information that is required by the command. The second format provides the command with declared values for the variables.

Issue the failoverpprc command to reestablish the extended distance relationship and create the A Volume to B Volume Global Copy relationship. Enter the failoverpprc command at the dscli command prompt with the following parameters and variables:

dscli>failoverpprc -dev storage_image_ID -remotedev storage_image_ID
-type gcp SourceVolumeID:TargetVolumeID

Example

dscli>failoverpprc -dev IBM.1750-68FA120 -remotedev IBM.1750-68FA150
 -type gcp 0100:0100 0101:0101  0102:0102 0103:0103

Note: The SourceVolume_ID is the A volume and the TargetVolume_ID is the B volume.

A confirmation message like the following is generated for each Global Copy pair that has been changed and moved to a state of suspended.

PPRC pair IBM.1750-68FA120/0100:IBM.1750-68FA150/0100 successfully
 suspended.

Note: All A volumes must successfully process the failoverpprc command before you can move on to the next step.