HP XP Business Copy Software User Manual
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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).
lists and describes the XP Business Copy pair status conditions.
Table 2 XP Business Copy Pair Status
S-VOL Access
Description
Pair 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
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About XP Business Copy Operations