Suspend Pair Dialog Box - HP StorageWorks P9000 User Manual

Item
CFW
M-JNL Information
Set
Cancel

Suspend Pair dialog box

This dialog box lets you split a pair. See
Item
S-VOL Write
Range
Description
Specify whether to copy cache fast write data to the S-VOL. The default is Only P-VOL.
Only P-VOL: Does not copy cache fast write data to the S-VOL.
Copy to S-VOL: Copies cache fast write data to the S-VOL.
Displays information about the master journal.
Current Mirror(s): Indicates the number of mirrors registered in the master journal.
Total Mirror(s): Indicates the sum of the following:
(1) The number of mirrors registered in the master journal.
(2) The number of mirrors to be added by the Paircreate dialog box.
(3) The number of mirrors for volumes in the Preview list in the Pair Operation window.
Applies the settings to the Preview list in the Pair Operation window.
Discards the settings and closes the dialog box.
"Split a pair " (page 71)
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 Volume if two or more pairs in the same mirror are
selected. The default is Mirror if not.
Volume: Only the specified pair(s) is split.
If you select pairs with Duplex status and other than Duplex status in the same mirror, an
unexpected suspension may occur during the pair operations (Suspend Pair, Delete(release)
Pair, and Resume Pair) 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.
Mirror: All pairs in the same mirror(s) as the selected pair(s) is split. If the following two
conditions are satisfied and you click Apply, a warning message appears and processing
cannot be continued:
The Preview list contains two or more pairs belonging to the same mirror.
The Range column displays 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 displays Volume 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.
for complete information.
Pair Operation window 171