Release pairs – HP XP P9500 Storage User Manual
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When resynchronizing, Continuous Access Synchronous pairs can be migrated to External Storage
Access Manager. To migrate Continuous Access Synchronous pairs to ESAM pairs, see the HP
P9000 External Storage Access Manager User Guide.
Procedure 7 To resynchronize a pair
1.
On the menu bar, click Actions > Remote Copy > Continuous Access Synchronous > Pair
Operation. The Pair Operation window opens.
2.
Change to Modify mode by clicking the
icon.
3.
In the tree, select the port, host group, CU, or the CU grouping where the pair is located.
4.
In the list, select the pair volume that is split and that you want to resynchronize, right-click,
and select Pairresync from the menu. The Pairresync dialog box displays.
5.
If you are changing the P-VOL Fence Level, select a new fence level from the list. This is optional.
See fence level descriptions in the prerequisites for
.
6.
From the Copy Pace list, select the number of the tracks, 1-15, for the resync operation(s). The
default is 15. For more on copy pace levels, see the descriptions in
.
7.
From the Priority list, enter the desired priority, or scheduling order, for the resync operation.
You can set priority from 1 to 256. The default is 32. For more on priority, see the descriptions
in
.
8.
Click Set then Apply.
If the operation does not start normally, an error code displays in the Error Code column in
the Preview list. To display an error message, select the LU, right-click, and select Error Detail.
9.
Verify that the operation completed successfully and that pair status is PAIR on the Pair
Operation window. You can update the progress of the operation by clicking File/Refresh.
Release pairs
A Continuous Access Synchronous pair can be released or deleted. Doing this deletes the Continuous
Access Synchronous relationship, though not the volumes or their data.
•
When it is no longer necessary to maintain a remote copy of the P-VOL, release a pair from
the primary system only. All update operations are stopped and pair status for both the P-VOL
and S-VOL changes to SMPL.
When a pair is released, the primary system continues to accept write I/O to the former P-VOL
but does not keep track of the updates.
•
Release a pair from the secondary system only for disaster recovery purposes. When you do
this, the secondary system changes the S-VOL pair status to SMPL, but does not change the
P-VOL’s status. When the primary system performs the next Continuous Access Synchronous
operation for the pair, the primary system detects that the S-VOL status is SMPL, and then
changes P-VOL status to PSUS (Delete pair to RCU).
To restart a pair that was released from the secondary system, you must release the pair from
the primary system, then create the pair from the primary system.
NOTE:
When you release a pair from the secondary system, remember that the S-VOL and P-VOL
are identical (for example, same volume label). Make sure to take appropriate precautions to
prevent a system problem due to duplicate volumes.
Procedure 8 To release a pair
1.
On the menu bar, click Actions > Remote Copy > Continuous Access Synchronous > Pair
Operation. The Pair Operation window opens.
2.
Change to Modify mode by clicking the
icon.
3.
In the tree, select the port, host group, CU, or the CU grouping where the pair is located.
Release pairs
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