Modifying Parameters And Deleting Consistency Groups; Modifying Parameters; Deleting Consistency Groups; Asynchronous Option Settings Parameter List - HP xp12000 User Manual

HP recommends that you change the I/O Delay Start and I/O Delay Increase when all Continuous Access
XP asynchronous pairs are suspended, or host I/O and sidefiles do not exist. If you do not want to control
inflow into a sidefile, specify the value same as the Pending Update Data Rate for the I/O Delay Start and
I/O Delay Increase, and specify 0 second for the Offloading Timer.
1. From the Consistency Group list, right-click, and click Async Option. The Async Option pane appears.
NOTE:
2. In the Async Option pane, select parameters.
3. Click Set to set parameters. The list changes to the Asynchronous Option Settings Parameter list.
NOTE:
deleting consistency
4. Click Apply on the Continuous Access XP main pane to apply option settings to the disk array.
When the Async Option pane closes, the list changes to the Asynchronous Option Settings Parameter list.
Figure 43

Asynchronous Option Settings Parameter list

• Pending Rate: Sidefile allocation in %. Indicates sidefile threshold, which is maximum amount of cache
used for storing Continuous Access XP asynchronous recordsets (sidefiles).
• Offloading: Offloading timer in seconds. Indicates that the MCU waits to send a Continuous Access XP
Async recordset to the RCU.
• Delay Start: Maximum amount of cache for starting inflow control for the asynchronous copy.
• Delay Increase: Maximum amount of cache for starting to strengthen control over inflow for the
asynchronous copy.

Modifying parameters and deleting consistency groups

After the Consistency Group (CT Group) and Asynchronous Option operations, parameters can be
modified individually, and consistency groups set by the operation can be deleted.

Modifying parameters

1. After performing the CT Group operation, click a consistency group on the list. To modify parameters
for Async Option operation, you do not have to select the row on the list.
2. Right-click, and click Modify. A pane for each operation appears.
3. Modify parameters, and click Set.
4. Click Apply on the Continuous Access XP main pane to apply modifications to the disk array.

Deleting consistency groups

1. Click the consistency groups on the list.
2. Right-click, and click Delete. Selected consistency groups are deleted from the list, and the consistency
groups are out of operations.
3. Click Apply on the Continuous Access XP main pane to apply the deletion to the disk array.
For the CT Group operation, the Cancel All command deletes all consistency groups on the list, and all
consistency groups are removed from operations. All consistency groups can also be deleted using the
Delete command and selecting all consistency groups on the list. When all consistency groups are deleted
(by the Cancel All or Delete command), the list status becomes the Volume list.
For the Asynchronous Option operation, the Delete command is not available. You can modify options set
or cancel all option settings made.
You do not have to select a consistency group on the list.
After being set, options can be modified and canceled (see
groups" on page 83).
Continuous Access XP user guide for the XP12000/XP10000
"Modifying parameters and
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