HP XP P9000 Business Copy User Guide (AV400-96483, August 2012)

Snapshot pair statusBusiness Copy operation
PSUERCPYCOPY
2
PSUS, PFUSPAIR, PFULCOPY
1
(pairsplit -E)
YesYesYesYesYesYesDelete a pair
(pairsplit -S)
1. COPY status during initial copy.
2. COPY status during resynchronization.
3. 2. After executing the pairsplit command on the SS pair, you must confirm that all pairs in the SS consistency group are in
PSUS status before performing the BC operation. This insures that all snapshot data is consistent with primary volume data,
and therefore is ready to use in the BC operation.
4. 3. When the host accesses the SS secondary volume, SS primary volume data may be used. Therefore you cannot perform
the Quick Restore operation in reverse direction to swap the BC primary and secondary volumes.
Sharing the SS primary volume with the BC secondary volume
The following table shows the pair operations allowed when the Business Copy secondary volume
is shared with a Snapshot primary volume.
Snapshot pair statusBusiness Copy operation
PSUERCPYCOPY
2
PSUS, PFUSPAIR, PFULCOPY
1
NoNoNoNoNoNoCreate a pair (paircreate)
NoNoNoNoNoNoCreate and split a pair (paircreate -split)
YesNoYesYesYes
1
YesSplit a pair (pairsplit)
YesNoYesYesYes
1
YesResynchronize a pair (pairresync)
YesNoYesYesYes
3
YesResynchronize a pair in reverse direction
(pairresync -restore)
NoNoNoNoNoNoQuick resync of a pair in reverse direction
4
(pairresync -restore)
YesNoYesYesYesYesSuspend a pair operation
(pairsplit -E)
YesYesYesYesYesYesDelete a pair
(pairsplit -S)
1. COPY status during initial copy.
2. COPY status during resynchronization.
3. 2. After executing the pairsplit command on the SS pair, you must confirm that all pairs in the SS consistency group are in
PSUS status before performing the BC operation. This insures that all snapshot data is consistent with primary volume data,
and therefore is ready to use in the BC operation.
4. 3. When the host accesses the SS secondary volume, SS primary volume data may be used. Therefore you cannot perform
the Quick Restore operation in reverse direction to swap the BC primary and secondary volumes.
Data Retention
You can create Business Copy pairs using volumes to which the following Data Retention’s access
attributes are set:
• Read/Write
• Read Only (Volume)
• Protect
Data Retention 23