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)

Figure 7 BC P-VOL forming pair with external S-VOL and shared as Continuous Access XP S-VOL
.
Figure 8 BC S-VOL forming pair with external P-VOL and shared as Continuous Access XP P-VOL
.
Figure 9 BC P-VOL forming pair with CA XP Jou. S-VOL and Ext. S-VOL, respectively
.
Figure 10 BC P-VOL forming pair with external S-VOL and shared as Continuous Access XP Journal
S-VOL
.
Use the Pairresync window to resynchronize split and suspended BC pairs. When the pairresync
operation starts, the pair status changes to COPY(RS) or COPY(RS-R). When the pairresync is complete,
the pair status changes to PAIR. The disk array resumes BC update copy operations after the pair
status changes to PAIR. The P-VOL remains fully accessible during a normal pairresync operation, but
becomes inaccessible to all hosts during a reverse or quick restore pairresync operation. This ensures
that data on the P-VOL is identical to data on the S-VOL when the reverse or quick restore pairresync
operation completes.
Pair status and time required for pairresync
The pairresync operation can be performed on a split pair or suspended pair. This section describes
the relationship between the pair status and the time required for pairresync operations.
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