HP StorageWorks XP Remote Web Console Software - Manual (Page 261)

Chapter 8 Performing Pair Operations 8-27
Hitachi Universal Replicator for IBM /OS User’s Guide
To monitor the progress of releasing pair(s), click File, Refresh on the
menu bar of the Storage Navigator main window to update the information
in the list, or use the Detailed Information window to monitor the detailed
status of each pair.
Note: To restore a pair which was released from the secondary storage
system, first release the pair from the primary storage system, and then
restore the pair using the appropriate initial copy option.
Figure 8-8 Delete Pair Window
The Delete Pair window displays the following:
• Range: Allows you to specify the release range. The default is Volume if
two or more pairs in the same mirror are selected. The default is Group if
not. Also, if the pair status is Simplex, Range is set to Volume. If the
pair status is Deleting or Suspending, Range is set to Group.
– Volume: Only the specified pair(s) will be released. Note: 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 pair operations should be performed
under light I/O load conditions.
– Group: All pairs in the same mirror(s) as the selected pair(s) will be
released.
Caution: Do not use this option when releasing pairs at the
secondary storage system during disaster recovery.
Note : If the following two conditions are satisfied and you select Apply, a
warning message will be displayed and processing cannot be continued:
– The Preview list contains two or more pairs belonging to the same
mirror.
– The Range column displays Group 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 all but one pair in the same mirror, right
click the selected pairs, and then select Delete.