Whether hosts can access p-vols and s-vols – HP StorageWorks XP Remote Web Console Software User Manual
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Table 6 Whether hosts can access P-VOLs and S-VOLs
P-VOL
S-VOL
Pair status
Read
Write
Read
Write
SMPL
OK
OK
—
—
COPY
OK
OK
No
No
PAIR/PFUL
OK
OK
No
No
PSUS/PFUS
OK
OK
OK
OK
SMPL(PD)
OK
OK
No
No
COPY(RS)
OK
OK
No
No
COPY(RS-R)
OK
OK
No
No
PSUE
OK
1
OK
1
No
No
1
If the pair status changes to PSUE because a failure occurred during the restoration, the host cannot access that pair.
CAUTION:
If the host computer uses application software to monitor the Snapshot XP pairs' volumes, problems, such
as abnormal end, might occur. For example, since the S-VOL whose status is not PSUS (or PFUS) rejects
access from the host, a problem might occur on the monitoring application software whose access is
rejected. In addition, if the host computer connects to more than one port, a problem might also occur
on ports that are not connected to the S-VOL that rejected the host access. You must terminate the
application software monitoring the volumes to solve these problems.
Use RAID Manager XP commands to operate Snapshot XP pairs. However, whether the operations
complete normally or not depends on the pair status.
shows the pair status and results of the
RAID Manager commands.
Table 7 Pair status and results of RAID Manager XP commands
RAID Manager XP command
1
Pair
status
paircreate paircreate
-split
pairsplit
pairresync pairresync
-restore
pair-
split -S
pair-
split -E
SMPL
OK
No
No
No
No
NOP
No
COPY
NOP
No
No
NOP
NOP
No
No
PAIR/PFUL NOP
OK
OK
NOP
NOP
OK
No
PSUS/
PFUS
No
NOP
NOP
OK
OK
OK
No
SMPL(PD)
No
No
No
No
No
NOP
No
COPY(RS)
NOP
No
No
NOP
NOP
No
No
COPY(RS-R) NOP
No
No
NOP
NOP
No
No
PSUE
NO
No
No
OK
2
No
OK
NOP
1
OK: Command executes the process and ends normally.
NOP: Command does not execute the process, but ends normally.
No: Command ends abnormally (that is, command is rejected).
2
If you issue the pairresync command for a pair whose status has changed to PSUE because of a shortage of shared memory
for the V-VOL management area, the command is rejected and ends abnormally.
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Using Snapshot XP