Table 5 – HP StorageWorks XP Remote Web Console Software User Manual
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ShadowImage for the XP128/XP1024/XP10000/XP12000
If you do not want the S-VOL and T-VOL to be resynchronized after the quick restore operation, you must set
the Swap&Freeze option before performing the quick restore operation (see
CAUTION:
When a reverse or quick restore resync operation ends abnormally or a Suspend pair is
requested during a reverse copy or quick restore, the pair status changes to suspended. The suspended
pair’s S-VOL is read/write-enabled for all hosts; however, data on the S-VOL is not guaranteed. The
suspended pair’s T-VOL remains read/write-disabled.
Even when a reverse or quick restore resync operation ends abnormally or a Suspend pair is requested
during a reverse copy or quick restore, the status of other ShadowImage for z/OS pairs sharing the same
S-VOL does not change.
If the reverse copy or quick restore operation is performed on one ShadowImage for z/OS pair in a 1-to-n
configuration (n>1), the S-VOL and the other T-VOLs are no longer synchronized.
Table 5
Reverse and quick restore Pairresync requirements
Parameter
Requirement(s)
Pair status.
The specified pair must be in the split state. All other pairs that share the same
S-VOL as the specified pair must also be in the split
or suspended state.
Pair type.
If a pair consists of VLL and normal volumes, you cannot perform the quick restore
pairresync command.
The specified pair must not be a Cross-OS File Exchange volume pair.
Reverse resync or quick
restore command issued to a
shared SI390/TC390
volume.
If the SI390 and TC390 pairs share the same volume (S-VOL = M-VOL, T-VOL =
M-VOL, or S-VOL = R-VOL), and theTC390 pair is not in the
suspend
status, the
reverse resync and quick restore operations cannot be performed. (The command
will be rejected.)
During the reverse resync or quick restore operation, a TC390 pair cannot be
created. The TC390 add pair command will be rejected when the SI390 pair status
is
resync-r.
Effect on other pairs that
share the S-VOL.
If the reverse resync or quick restore operation is performed on one SI390 pair in a
1-to-n configuration (n>1), the S-VOL and the other T-VOLs are no longer
synchronized. While this reverse resync or quick restore is in progress, you cannot
perform add, split, or resync pair for any other pair that shares the same S-VOL
(delete pair and suspend pair are allowed).
Reverse resync or quick
restore ends abnormally.
OR
Suspend pair is requested
during reverse resync or
quick restore.
1.
The pair status changes to
suspended
.
2.
The S-VOL of the
suspended
pair is read/write-enabled for all hosts; however,
the data on the S-VOL is not guaranteed. The T-VOL of the suspended pair
remains read/write-disabled.
3.
The status of other SI390 pairs that share the same S-VOL does not change.
Reverse copy or quick restore
command issues to a shared
Slz/Universal Replicator
volume.
If the ShadowImage and Universal Replicator for z/OS pairs share the same
volume, and the Universal Replicator pair is not in the suspend status, the reverse
copy and a quick restore operations cannot be performed. (The command will be
rejected.)
Shared SIz/Universal
Replicator volume
If the ShadowImage for z/OS and Universal Replicator for z/OS pairs share the
same volume, and the Universal Replicator volume pair is not in the suspend status,
the reverse copy and quick restore operations cannot be performed.