Pairresync Dialog Box - HP XP P9500 User Manual

Item
S-VOL Write
Range
Suspend Mode
Set
Cancel

Pairresync dialog box

Use this dialog box to resynchronize a pair.
See "Restore a pair " (page 60)
166 Continuous Access Journal GUI reference
Description
Specify whether to permit hosts to write data to the S-VOL. The default is Disable (that is, do
not permit):
Disable: Hosts cannot write data to the S-VOL while the pair is split.
Enable: Hosts can write data to the S-VOL while the pair is split. This option is available
only when the selected volume is a P-VOL.
Specify the split range. The default is LU if two or more pairs in the same mirror are selected.
The default is Mirror if not.
LU: Only the specified pair(s) is split.
If you select pairs with PAIR status and other than PAIR status in the mirror, an unexpected
suspension may occur during the pair operations (Pairsplit-r, Pairsplit-S, and Pairresync)
under heavy I/O load conditions. You can estimate whether the I/O load is heavy or not
from frequency of host I/Os. The suspend pair operations should be performed under light
I/O load conditions.
If the following two conditions are satisfied and you select Apply, a warning message appears
and processing cannot continue.
The Preview list contains two or more pairs belonging to the same mirror.
The Range column shows Mirror for at least one of the above pairs.
To be able to continue processing, do either of the following:
Ensure that the Range column shows LU for all pairs in the same mirror.
In the Preview list, select one pair in one mirror, and then other pairs in the mirror is
excluded.
Specify how to deal with update data that has not been copied to the S-VOL. The default is
Flush:
Flush: When you split the pair, update data is copied to the S-VOL.
When the secondary storage system receives a request for splitting a pair, all the journal
data (that is, update data) that the pair retains is written to the S-VOL. After that, the status
of the pair changes from Suspending to PSUS if the pair does not retain any journal data
for a certain period of time.
Purge: When you split the pair, update data is not copied to the S-VOL. If you restore the
pair later, the update data is copied to the S-VOL.
Applies the settings to the Preview list in the Pair Operation window.
Discards the settings and closes the dialog box.
for complete information.