HP XP P9000 Command View Advanced Edition Software - Manual (Page 245)

The force-split procedure is as follows:
1. If the primary volume cannot be written to, an RC circuit or secondary site failure might have
occurred. Check for the following in Replication Manager:
• An abnormal remote path status (possibly an RC circuit failure)
• An Unknown copy pair status in the secondary volume (possibly a secondary site failure)
2. Using the Change Pair Status Wizard, create a force-split Change Copy Pair Status task for the
target copy group or copy pair.
3. Check the Task List window to confirm that the status of the task is Success.
4. Check the copy pair status in the Pair Configurations view.
Takeover-recovery operations (resync and recreate)
There are two types of takeover-recovery operations: takeover-recovery (resync) and takeover-recovery
(recreate). A takeover-recovery operation is used as a recovery procedure when a user performs a
takeover operation and the secondary volume changes to Split (SSWS). The details of the executed
takeover-recovery operation depend on the options specified, so you must check the copy pair status
and select the options accordingly. The table below lists the options for the takeover-recovery operation
and the status of the target copy pairs.
Table 15 Operations and target copy pair states for takeover-recovery
Target copy pair
state
Description Operation
S-VOL P-VOL
Split (SS-
WS)
Not Sim-
plex
(SMPL)
Switches and synchronizes the primary and sec-
ondary volumes.
takeover-recovery (resync)
Split (SS-
WS) Simplex
(SMPL) Recreates the copy pair from the secondary
volume.
takeover-recovery (recreate)
CAUTION:
Note the following:
• Use of takeover-recovery (resync) operation is only permitted when the S-VOL copy pair state is
Split (SSWS), regardless of the P-VOL state.
• The takeover-recovery (recovery) operation is only permitted in the following cases:
- When the P-VOL copy pair state is Simplex (SMPL) and the P-VOL copy pair state is Split (SSWS)
- When the S-VOL copy pair state is Simplex (SMPL) regardless of the P-VOL copy pair state
The takeover-recovery procedure is as follows:
1. Using the Change Pair Status Wizard, create a takeover-recovery Change Copy Pair Status task
for the target copy group or copy pair.
2. Check the Task List window to confirm that the status of the task is Success.
3. Check the copy pair status in the Pair Configurations view.
User Guide 245