Hp XP Continuous Access Software Manuel d'utilisateur télécharger pdf (Page 163)

NOTE:

If the following conditions are satisﬁed and you click Apply, a warning message appears and

processing cannot continue:

•ThePreset list contains two or more pairs belonging to the same consistency group.

•TheRange column displays Group foratleastoneoftheabovepairs.

To continue processing, do one of the following:

• Ensure that the Range column displays LU for all pairs in the same consistency group.

•InthePreset 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,thedefaultisForce.Otherwise,thedefaultisNormal.

• 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,andspecifyFlush 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

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Hp XP Continuous Access Software Manuel d'utilisateur Page 163