HP XP P9500 Storage - Manual (Page 112)

Prerequisite information
•
A pair cannot be deleted in PSUS(SP)/PSUS status.
•
When a pair is created, the processor blade allocated to the P-VOL's LDEV is also allocated
to the S-VOL's LDEV. When a pair is deleted, the processor blade that was originally allocated
to the S-VOL'S LDEV is allocated to it again. If the original processor blade was removed,
another processor blade is allocated.
•
When you delete a pair, the status of the volumes changes to SMPL, which no longer displays
in Remote Web Console. However, before becoming SMPL, it first changes to SMPL(PD). You
can check pair status in the Pair Operation window.
To distinguish between SMPL and SMPL (PD) volumes using RAID Manager, run the pairdisplay
and Inqraid commands. The pairdisplay command shows status but cannot distinguish between
SMPL and SMPL(PD); and the Inqraid shows whether a volume is being used by Business
Copy.
◦ If the result of the pairdisplay command is SMPL, and the result of the Inqraid command
is PVOL or SVOL, then Business Copy is still using the pair and status is SMPL(PD).
◦ If the result of the pairdisplay command is SMPL, and the result of the Inqraid command
is not PVOL or SVOL, Business Copy is not using the volumes. Therefore, status is confirmed
as SMPL.
•
After deleting a pair, wait 10 seconds—until volume status changes from SMPL(PD) to
SMPL—before performing tasks such as pair operation or event waiting. If you do not wait
10 seconds, the operation might end abnormally.
Procedure 16 To delete a pair
1. To synchronize the P-VOL and S-VOL before deleting the pair:
1.
Wait until all write I/Os to the P VOL are complete
2. Set the P-VOL offline
3. Split the pair. This copies differential data to the S VOL.
2. In Remote Web Console, click Actions > Local Replications > BC/SS > Pair Operation.
3. Change to Modify mode by clicking the icon.
4. In the tree for the Pair Operations window, select the port or host group where the pairs or
volumes are located.
Related volumes display in the volume list. If a volume is already paired, pair information also
displays.
5. Select the pairs you want to delete, right-click, and select Pairsplit-S from the menu.
112 Pair operations (secondary window)