HP XP P9500 Storage - Manual (Page 46)

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For Reverse Copy or Quick Restore, the pair must be in PSUS status.
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The pairresync normally takes less time when the pair is in PSUS status than when it is in PSUE.
This is because the amount of differential data accumulated for a split pair is usually much
less than the total amount of data in the primary volume, which must be copied in full when
the pair was suspended by the storage system.
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To keep the primary and secondary volumes unsynchronized when performing a Quick Restore,
enable the Swap&Freeze option prior to performing the operation. Update copy operations
are then suppressed when the Quick Restore is completed, and the pair is in PAIR status.
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If a pair consists of encrypted volumes and a non-encrypted volume, and the Quick Restore
is run, the primary and secondary volumes encryption statuses are reversed.
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With a Quick Restore, Remote Web Console may display outdated information. Click Refresh
View to insure the most up-to-date information.
Restrictions for Reverse Copy and Quick Restore
The following restrictions apply to the Reverse Copy and Quick Restore operations:
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Pairs sharing the same primary volume must be in PSUS or PSUE status.
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The Reverse Copy cannot be used for L2 pairs.
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The Quick Restore cannot be used under the following conditions:
If a quick format is being performed on either pair volume ◦
◦ For L2 pairs
◦ If either pair volume is a THP V-VOL
◦ If the secondary volume is also part of a Snapshot pair
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The time to complete the Quick Restore operation may increase when you perform LDEV
maintenance or maintenance from the SVP or Remote Web Console.
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If the pair shares a volume with Continuous Access Synchronous or Continuous Access Journal,
the Continuous Access Synchronous or Continuous Access Journal pair must be suspended to
perform the Reverse Copy or Quick Restore operation.
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You cannot create a Continuous Access Synchronous or Continuous Access Journal pair with
a volume shared by Business Copy during the Reverse Copy or Quick Restore operation.
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When the Reverse Copy or Quick Restore is in progress, you cannot create, split, or resync
any pair sharing the same primary volume. However, the pairs can be deleted or suspended.
Resynchronizing pairs
1. In the tree, click Replications > Local Replications.
2. In the Pairs tab, select the pair you want to resynchronize, then click Resync Pairs.
3. In the Resynchronize Volume Pair window, select a Resync Type. See “Types of resync
operation” (page 45) for more information.
46 Performing pair operations