HP XP Continuous Access Software - Manual (Page 163)

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 56 ).
• Cancel: Discards settings.
Creating a Point-in-Time copy of data volumes
Use Continuous Access XP Journal to make Point-in-Time (PiT) duplicates of groups of volumes. The term
Point-in-Time (PiT) refers to the process of copying data immediately when you want to obtain it. Use
Continuous Access XP Journal to create a PiT copy of data volumes belonging to a journal group.
1. Stop all write I/Os from hosts to primary data volumes in the journal group. Stop all host updates to
all Continuous Access XP Journal primary data volumes in the group.
2. After all write I/Os to primary data volumes are stopped, split the mirror (that is, a pair of the
master and restore journal groups, see Splitting mirrors (Pairsplit-r: suspending copy operations) ).
When splitting the mirrors, use the Pairsplit-r pane, specify Group for Range, and specify Flush for
Suspend Mode.
3. When the status of all data volume pairs in the journal group changes to PSUS, the duplicate set
of volumes is complete. If desired, restart your business application at the primary site to resume
business activities.
Continuous Access XP Journal user guide 163