HP StorageWorks XP Remote Web Console Software - Manual (Page 34)

Table 5 Reverse or 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
You cannot perform the quick restore pairresync
command on a pair that consists of VLL and normal
volumes. The specified pair must NOT be a Data
Exchange volume pair.
Shared Siz/TCz volume
If the Siz and TCz pairs* share the same volume
(S-VOL = M-VOL, T-VOL = M-VOL, or S-VOL = R-VOL),
and theTrueCopy for z/OS pair is not in the suspend
status, the reverse copy and quick restore operations
cannot be performed.
Shared Siz/URz volume
If the Siz and URz pairs* share the same volume,
and the URz pair is not in the suspend status, the
reverse copy and quick restore operations cannot be
performed.
*During the reverse copy or quick restore operation, a TCz pair nor a URz cannot be created. The TCz add
pair command and URz add pair command is rejected when the Siz pair status is resync-r. When the
shared Siz/TCz volume is paired with an external volume the quick restore pair-resync operation cannot be
performed. When the shared Siz/URz volume is paired with an external volume the quick restore pair-resync
operation cannot be performed.
Cautions :
• When a reverse or quick restore resync operation ends abnormally, or a Suspend pair is
requested during reverse copy or quick restore, the pair status changes to suspended. 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.
• If a reverse or quick restore resync operation ends abnormally, or a Suspend pair is requested
during reverse copy or quick restore, the status of other Siz pairs which share the same S-VOL
does not change.
• If the reverse copy or quick restore operation is performed on one Siz pair in a 1-to-n configuration
(n>1), the S-VOL and the other T-VOLs are no longer synchronized.
NOTE:
During reverse copy 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).
The colored volume means that it is an internal volume, and the volume without color means that it
is an external volume.
NOTE:
A primary volume (P-VOL) of URz means a primary data volume of URz. A secondary volume (S-VOL)
of URz means a secondary data volume of URz.
34 Overview of Hitachi ShadowImage for z/OS Operations