Splitting Consistency Group Pairs With At-Time Split - HP StorageWorks P9000 - Disk Arrays User Manual

6. In the Split Volume Pair dialog box, proceed as follows:
Ensure that the pair you want to split is selected.
Select the Simplex volume to be the S-VOL in a pair create and split operation.
7. From Copy Pace, select the pace at which the pair(s) are to be split, Slower, Medium, or Faster.
Copy Pace affects the host I/O performance: a slower pace minimizes impact, a faster pace
has the greatest impact. The pace you select is used for all pairs in the operation.
NOTE:
you specify a different copy pace for new pairs in the Split Volume Pair dialog box, the copy
pace for the existing Split Volume Pair operation settings displayed in the Preview List also
will be changed. The latest copy pace specified in the Split Volume Pair dialog box is always
reflected to the storage system.
8. From Select Split Type, select one of the following:
Steady Split: Any remaining differential data between S-VOL and T-VOL is copied to the
T-VOL before the split. Read and write access to the T-VOL is available only when the
operation completes.
Quick Split: Read and write access to the T-VOL is available immediately. Any remaining
differential data between S-VOL and T-VOL is copied to the T-VOL in the background.
NOTE:
is applied to all pairs.
9. If you are splitting an existing pair or pairs, click OK and go to the last two steps in this
procedure.
10. Display the volumes available for T-VOLs by selecting the following filters from the Select T-VOL
box:
Select an LDKC (if selectable).
Select the appropriate CU image.
Select a Volume Type to display internal or external volumes. You can select both if
desired.
Select an Attribute to display volumes previously reserved as T-VOLs, or volumes that are
not reserved. You can select both if desired.
1 1. Select the volume to be the T-VOL from the volume list in the Select T-VOL box.
12. Click Set. This places the volume as the T-VOL in the pair list.
13. If creating and splitting pairs, pair additional T-VOLs to a S-VOL as desired.
14. To replace an T-VOL in the volume/pair list, select the pair, select the desired T-VOL in the
Select T-VOL box and then click Change.
15. To complete the operation, click OK.
The Pair Operation window reappears.
16. Review the information in the Preview list. To change a selection, right-click it, select Modify,
and make your changes.
17. Click Apply to commit the operation to the system.

Splitting consistency group pairs with At-Time Split

Using Business Continuity Manager, you can split all the Business Copy Z pairs in a consistency
group at a specified time. This is done using the At-Time Split feature.
With PPRC, you can split the pairs in a consistency group though without a specified time. See the
instructions in
When the Preview List already holds some Split Volume Pair operation settings, if
The split type is set for all pairs being split. If you change the setting, the latest setting
"Pair operations using PPRC" (page 50) for more information.
Split and create pairs 29