HP XP P9500 Storage - Manual (Page 107)

6. In the Pairsplit dialog box, proceed as follows:
•
Make sure that the pair or pairs that you want to split displays.
•
Select the SMPL volume to be the P-VOL in an L1 pair-create-and-split operation.
•
Select the L1 pair whose S-VOL will be the P-VOL in an L2 pair create and split operation.
7. From Copy Pace, select the pace at which the pairs 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.
8. For pairs being created and split, select an MU number. For L1 pairs, use 0, 1, or 2. For L2
pairs, use 1 or 2.
•
You cannot select an MU number for an L2 pair that is being used in the associated L1
pair.
•
You cannot select an MU number that is being used for a Snapshot pair.
9. From Select Split Type, select one of the following:
•
Steady Split: Any remaining differential data between P-VOL and S-VOL is copied to the
S-VOL before the split. Read and write access to the S-VOL is available only when the
operation completes.
•
Quick Split: Read and write access to the S-VOL is available immediately. Any remaining
differential data between P-VOL and S-VOL is copied to the S-VOL in the background.
10. If you are splitting an existing pair or pairs, click OK and go to the last two steps in this
procedure.
If you are creating and splitting a pair, continue to the next step.
11. Display the volumes available for S-VOLs by selecting the following filters from the Select S-VOL
box:
•
Select a Port to display associated volumes.
•
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 S-VOLs, or volumes that are
not reserved. You can select both if desired.
•
You can also filter by existing pairs that may be used for creating L2 pairs (Pair check
box).
12. Select the volume to be the S-VOL from the volume list in the Select S-VOL box.
13. Do one of the following:
•
To create and split an L1 pair, click Set. This adds the pair to the Volume List as an L1
pair.
•
To create and split an L2 pair, click Cascade. This adds the pair to the Volume List as an
L2 pair.
14. To replace an S-VOL in the volume/pair list, select the pair, select the desired S-VOL in the
Select S-VOL box and then click Change.
15. To complete the operation, click OK.
16. In the Pair Operation window, 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 storage system.
Splitting consistency group pairs with consistency group split
You can split the Business Copy pairs in a consistency group at a specified time. This is done using
the consistency group split feature. RAID Manager is required to run the operation.
Splitting pairs, creating and splitting pairs 107