HP StorageWorks XP24000/XP20000 Business Copy Software User Guide (T5213-96034, May 2011)

operation is complete, the pair status changes to PSUS to enable you to access the split
S-VOL. The update copy operation is not performed on the pairs that have status PSUS.
• If the storage system cannot maintain PAIR status for any reason, or if you suspend the
pair (pairsplit-E), the pair status changes to PSUE.
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.
• When you specify Reverse Copy or Quick Restore mode for a pairresync operation, the
pair status changes to COPY(RS-R).
• When you delete a pair (pairsplit-S), the status of the volumes that were used by the pair
changes to SMPL. You cannot delete the pair that has status PSUS(SP).
• When you specify Reverse Copy or Quick Restore mode for a pairresync operation, the
pair status changes to COPY(RS-R).
• When you delete a pair (pairsplit-S), the status of the volumes that were used by the pair
changes to SMPL. You cannot delete the pair that has status PSUS(SP).
Table 2 (page 22) lists and describes the XP Business Copy pair status conditions.
Table 2 XP Business Copy Pair Status
S-VOL AccessDescriptionPair Status
N/A (there is no S-VOL yet).The volume is not assigned to an XP Business Copy pair.
The storage system accepts read and write I/Os for all
SMPL volumes that are not reserved.
SMPL
Read only.The paircreate operation has been accepted normally. The
initial copy will be performed.
1
The storage system
continues to accept read and write operations for the
P-VOL, but stops accepting write operations for the S-VOL.
No update copy operations are performed.
COPY(PD)
Read only.The initial copy operation is complete, and the storage
system starts performing asynchronous update copy
operations from the P-VOL to the S-VOL as needed. The
P-VOL and S-VOL of a duplex pair (PAIR status) may not
be identical.
PAIR
Read only.The pairsplit operation in the steady split mode has been
accepted normally. The split operation triggers a copy
operation.
1
All P-VOL updates prior to the pairsplit
command are being copied to the S-VOL. When these
updates are complete, the split S-VOL is identical to the
state of the P-VOL when the split started.
COPY(SP)
Read and write. The S-VOL can be
mounted.
The pairsplit operation in the quick split mode has been
accepted normally. The split operation triggers a copy
operation.
1
Only the P-VOL differential data is being copied
to the S-VOL in background. The PSUS(SP) pairs cannot
be deleted.
PSUS(SP)
Read and write. The S-VOL can be
mounted.
The storage system stops performing update copy
operations for PSUS (split) pairs, and starts accepting write
I/Os for PSUS S-VOLs. The storage system keeps track of
all updates to the split P-VOL and S-VOL, so that the pair
can be resynchronized quickly.
PSUS
22 About XP Business Copy Operations