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4. The following are the types of pair status (PSUS and PSUE) when the pair is not synchronized:
• When you split a pair (pairsplit), the pair status changes to COPY(SP) or PSUS(SP) for quick
pairsplit. During the pairsplit process, the pair status becomes COPY(SP). If you specify
Quick Split pairsplit, the pair status becomes PSUS(SP) during the process. When the
pairsplit operation is complete, the pair status changes to PSUS and you can access the split
S-VOL. The update copy operation is not performed on pairs with status of PSUS.
• If the disk array cannot maintain PAIR status for any reason or if you suspend the pair
(pairsplit-E), the pair status changes to PSUE.
NOTE:
• When you specify reverse or quick restore mode for a pairresync operation, the pair
status changes to COPY(RS-R) (data is copied in the reverse direction from the S-VOL to
the P-VOL). For more information about pairresync operation settings, see Pairresync
operations.
• When you delete a pair (pairsplit-S), the pair status changes to SMPL. You cannot
delete a pair with status of PSUS(SP).
5. When you start a pairresync operation, the pair status changes to COPY(RS) or COPY(RS-R). When
the pairresync operation is complete, the pair status changes to PAIR.
Business Copy XP user guide
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