HP StorageWorks XP Business Copy Software user guide: HP XP12000 Disk Array, HP XP10000 Disk Array, HP 200 Storage Virtualization System (T1713-96027, April 2010)

Pairsplit-S operation (delete)
This operation stops BC copy operations to the S-VOL of the pair and changes the pair status of both
volumes to SMPL. The volumes are not deleted. A BC pair can be deleted at any time except during
the quick pairsplit operation (or any status except SMPL status and PSUS(SP) status). After you delete
a BC pair, the S-VOL is still not available for write operations until the reserve attribute is reset.
Use the Pairsplit-S window to delete BC pairs. When a BC pair is deleted, pending update copy
operations for the pair are discarded, and the status of the P-VOL and S-VOL is changed to SMPL.
CAUTION:
The S-VOL of a duplex pair (PAIR status) may not be identical to its P-VOL due to the asynchronous
BC update copy operations.
BC options
Use the BC options to extend standard BC operations such as the paircreate and pairresync operations.
The following table lists the options that are currently available.
Table 7 BC options types and requirements
RequirementFeaturesOption type
You must change disk array setting
to enable the quick restore opera-
tion.
Suppresses the update copy.
See Swap&Freeze option.
Swap&Freeze
—
Suppresses the BC copy operations.
See Host I/O Performance option.
Host I/O Performance
NOTE:
The number of available option types depends on the disk array's settings.
Swap&Freeze option
This option allows the S-VOLs of a BC pair to remain unchanged after the quick restore operation. If
the quick restore operation is performed on a BC pair with the Swap&Freeze option, update copy
operations are suppressed for pairs in PAIR status after the quick restore operation. If the quick restore
operation is performed without the Swap&Freeze option, the P-VOL and S-VOL are resynchronized
when update copy operations are performed for pairs in PAIR status.
The following figure shows the state of the S-VOL after the quick restore operation with or without the
Swap&Freeze option.
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