HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)

Figure 59 Pairsplit-r Window
The Pairsplit-r window displays the following:
• S-VOL Write
:
Allows you to specify whether hosts can issue read I/O and write I/O to the
secondary d ata volume af ter the mirror is split. The default is Disable.
If
you select Enable, hosts can issue read I/O and write I/O to the secondary data volume af ter
you split th
emirror.
If
you select Disable, hosts cannot issue read I/O and write I/O to the secondar y data volume
after you split the mirror.
This parame
ter takes effect only when the selected volume is a master journal group.
• Range: Allows you to specify the split range. This parameter is always set to Group and cannot
be
changed.
• Suspend Mo
de: Allows you to specify how to handle update data that are not reflected to the
secondary data volume. The default is Flush.
•If you select Flush, update data will be reflected to the secondary data volume when you
split the m
irro r.
When the
secondary storage system receives a request for splitting a mirror, all the journal
data (that is, update data) that the mirror retains will be written to the secondary data volume.
After that
,
the status of the mirror will change from Suspending to PSUS if the mirror does not
retain an
y
journal data for a certain period of time.
•If you select Purge, update data will not be reflected to the secondary data volume when you
split the mirror. If you restore the mirror, the update data will be reflected to the secondar y
data volume.
Restoring a Mirror (Pairresync: Resuming a Copy Operation)
A mirror is a combination of a master journal group and a restore journal group. If you split a mirror, the
copying of data from the m aster journal group to the restore journal group will suspended. To restart the
copying of data, you need to restore the mirror.
To restore a mirror, follow the procedure below. Only the primary storage system administrator can
perform this op eration; the secondary storage system administrator cannot per form this operation.
1. Ensure that the Remote Web Console main window is in Modify m ode.
For detailed information about how to do this, see HP StorageWorks XP24000 Remote Web
Console User’s Guide.
2. Ensure that the Journal Operation window is displayed (see
“Journal Operation Window”onpage77).
3. Do either of the following:
• In the tree, select a ma ster journal group (
) or a restore journal group ( )from below
Registered.
• In the tree, sele ct Journal G roups or Registered and then select a master journal group (
from thelisttothe right.
The list displays a list of mirrors. One row in the list represents one mirror.
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