Status, Permitted Pair Operations; Reviewing Pair, Volume Details - HP StorageWorks P9000 - Disk Arrays User Manual

CAUTION:
REQUIRED" is returned. However, if you have created pairs with the volumes online, and then
execute DEVSERVE to a read/write disabled volume, a normal value is returned.

Status, permitted pair operations

A pair's status shows a pair's condition. It also shows you whether a specific operation can be
performed. The following shows operations that can be performed when a pair is in the various
statuses.
The following table shows supported operations when you have cascaded pairs.
Table 7 Supported operations for specific pair statuses
Operation Pair status
Simplex
Add Pair Ok
Split Pair Ok
Suspend No
Pair
Resync Pair No
(forward)
Resync Pair No
(backward)
Delete Pair No
NOTE:
Processing will end normally when you resynchronize a pair in duplex or resync status using the PPRC TSO command
to copy data from the S-VOL to the T-VOL. However, since no resynchronize operation is performed, pair status
does not change.
With Business Continuity Manager, processing ends normally but pair status also does not change for the reason
given above.
If you use the ICKDSF PPRCOPY command, the command abnormally ends and reports CC = 12.

Reviewing pair, volume details

You can review the data related to pairs and their volumes. This includes volume capacity, pair
status, S-VOL and T-VOL identifiers, and several other details.
NOTE: LDEVs for S-VOLs and T-VOLs listed in Remote Web Console may end in the following
special symbols:
A pound or gate symbol (#), which indicates an external volume (for example, 00:00:01#)
Procedure 1 1 To check pair and volume details
1. In Remote Web Console, click Actions > Local Copy > Business Copy for Mainframe/Compatible
FlashCopy > Pair Operation.
2. In the tree, select the CU image where the pairs or volumes are located. Related volumes
display in the volume list.
38 Monitoring and maintaining the system
When you execute DEVSERVE to a read/write disabled volume, "INTERVENTION
Pending Duplex
No No
Ok Ok
Ok Ok
No No
No No
Ok Ok
SP-Pend V-Split Split
No No No
No No No
Ok Ok Ok
No Ok Ok
No No Ok
Ok No Ok
Resync Reverse-R Suspend
No No No
No No No
Ok Ok No
No No Ok
No No No
Ok Ok Ok