HP StorageWorks Snapshot XP user guide (T1713-96023, October 2006)

Table 6 Whether hosts can acces s P-VOLs and S-VO Ls
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 Manag er XP comm ands to operate Snapshot XP pairs. However, whether the operations
complete normally or not depends on the p air status. Table 7 shows the pair status and results of the
RAID Manager commands.
Table 7 Pair status and results of R AID Manager XP commands
RAI D 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
NOPNoNoNOPNOPNoNo
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 N OP No
COPY(RS)
NOPNoNoNOPNOPNoNo
COPY(RS-R)
NOPNoNoNOPNOPNoNo
PSUE
NO N o No
OK
2
No
OK
NOP
1
OK: Command executes the p rocess 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 m emor y
for the V-VOL management area, the comm and is rejected and ends abnormally.
32
Using Snapshot XP