HP XP24000/XP20000 Business Copy Software User Guide (T5213-96034, November 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 21) lists and describes the XP Business Copy pair status conditions.
Table 2 XP Business Copy Pair Status
RAID Manager DisplayS-VOL AccessDescriptionPair Status
SMPLN/A (there is no S-VOL yet).The volume is not assigned to an XP
Business Copy pair. The storage system
SMPL
accepts read and write I/Os for all SMPL
volumes that are not reserved.
COPYRead only.The paircreate operation has been
accepted normally. The initial copy will be
COPY(PD)
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.
PAIRRead only.The initial copy operation is complete, and
the storage system starts performing
PAIR
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.
COPYRead only.The pairsplit operation in the steady split
mode has been accepted normally. The
COPY(SP)
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.
COPYRead and write. The S-VOL
can be mounted.
The pairsplit operation in the quick split
mode has been accepted normally. The
PSUS(SP)
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.
P-VOL: PSUSRead and write. The S-VOL
can be mounted.
The storage system stops performing update
copy operations for PSUS (split) pairs, and
PSUS
S-VOL: SSUS
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,
Pair Status 21