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.
Chapter 8 Performing Pair Operations |
