Restoring mirrors (pairresync: resuming copy, Operations) – HP StorageWorks XP Remote Web Console Software User Manual
Page 112
112 Using journal groups
• Enable: Hosts can issue read and write I/Os to the secondary data volume after you split the
mirror.
• Disable: Hosts cannot issue read and write I/Os to the secondary data volume after you split the
mirror. This is the default.
This parameter takes effect only when the selected volume is a master journal group.
•
Range: Split range. This is always set to Group and cannot be changed.
•
Suspend Mode: Specify how to handle update data that is not applied to the secondary data volume.
• Flush: Update data is applied to the secondary data volume when you split the mirror. This is the
default.
When the secondary array receives a request for splitting a mirror, all journal data (that is, update
data) that the mirror retains is written to the secondary data volume. After that, the mirror’s status
changes from Suspending to PSUS if the mirror does not retain any journal data for a certain period
of time.
• Purge: Update data is not applied to the secondary data volume when you split the mirror. If you
restore the mirror, update data is applied to the secondary data volume.
Restoring mirrors (Pairresync: resuming copy operations)
A mirror is a combination of a master journal group and a restore journal group. If you split a mirror,
copying data from the master journal group to the restore journal group is suspended. To restart data
copying, you must restore the mirror.
If you are logged onto an XP10000, you can perform this operation only on journal groups that have a
number below 10.
To restore a mirror, only primary array administrators can perform the following procedure:
1.
Ensure that Command View XP or XP Remote Web Console is in Modify mode. For more information,
see the HP StorageWorks Command View XP user guide for XP Disk Arrays or the HP StorageWorks
XP Remote Web Console user guide for XP12000/XP10000/SVS200.
2.
Display the Journal Operation pane (see ”
Displaying the Journal Operation pane
3.
Do one of the following:
• In the tree, select a master journal group (
) or restore journal group (
) from below
Registered.
• In the tree, select Journal Groups or Registered, and select a master journal group (
) from the
list to the right.
A list of mirrors displays. One row in the list represents one mirror.
4.
Locate mirrors that are in Stop, Hold, or Hold(Failure) status.
5.
From the mirrors, select and right-click the mirrors you want to restore. The result of this operation
differs according to the status of the selected mirror.
• When selecting a mirror in Stop status, data copying is restarted after the recovery.
• When selecting a mirror in Hold(Failure) status, the status changes to Hold after the recovery.
6.
Select JNL Groups and Pairresync.
7.
In the Preset list, check the mirrors you want to restore.
• To cancel restoring a mirror, right-click the mirror, and select Cancel.
• If necessary, repeat
to specify other mirrors.
8.
Click Apply to restore the mirrors.
NOTE:
If an error occurs, the right-most column of the Preset list displays the error code. To view
detailed information about the error, right-click the error code, and select Error Detail. An error
message appears providing detailed information about the error.