HP StorageWorks XP Remote Web Console Software - Manual (Page 133)

Continuous Access XP Journal user guide 133
NOTE: If a pair is deleted, the deletion might take effect on the secondary data volume later than it takes
effect on the primary data volume. Therefore, an error might occur if you reference a pair’s status or
manipulate a pair immediately after RAID Manager XP deletes the pair. If such an error occurs, check the
secondary data volume’s status and retry referencing the pair status or manipulating the pair.
Figure 59 Pairsplit-S pane
• Range: Delete range. If you select two or more pairs in the same consistency group, the default is LU.
Otherwise, the default is Group. Also, if the pair status is SMPL, Range is set to LU. If the pair status is
Deleting or Suspending, Range is set to Group.
• LU: Only the specified pairs are deleted.
NOTE: If you select pairs with PAIR status and pairs with other than PAIR status in the same
consistency group, an unexpected suspension might 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 the frequency of host I/Os. The pair operations should be performed
under light I/O load conditions.
• Group: All pairs in the same consistency groups as the selected pairs are deleted.
CAUTION: Do not use this option when deleting pairs at the secondary array during disaster
recovery.
NOTE: If the following conditions are satisfied and you click Apply, a warning message appears
and processing cannot continue:
• The Preset list contains two or more pairs belonging to the same consistency group.
• The Range column displays Group for at least one of the above pairs.
To continue processing, do one of the following:
• Ensure that the Range column displays LU for all pairs in the same consistency group.
• In the Preset list, select all but one pair in the same consistency group, right click the selected
pairs, and select Delete.
• Delete Mode: Specifies whether pairs are forcibly deleted. When the status of the pairs to be deleted
is SMPL or Deleting, the default is Force. Otherwise, the default is Normal.
• Force: Pairs are forcibly deleted even if the primary array cannot communicate with the secondary
array. Use this option to free a host waiting for device-end from a primary array that cannot
communicate with the secondary array, allowing host operations to continue.
If you specify Force when the pair status is other than SMPL, Range is set to Group.
• Normal: Pairs are deleted only if the primary array can change the pair status of the primary and
secondary data volumes to SMPL.
• Set: Applies settings in the Preset list in the Pair Operation pane ( Figure 50 ).
• Cancel: Discards settings.