7 pair status versus allowable operations, 8 siz pair status – HP StorageWorks XP Remote Web Console Software User Manual
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NOTE:
When you specify reverse or quick restore mode for a pairresync operation, the pair
status changes to resync-r (data is copied in the reverse direction from the T-VOL to the
S-VOL). For more information on the settings of the pairresync operation, see section
Resynchronize Pair Operations (Normal, Quick, Reverse, Quick Restore)
NOTE:
When you delete a pair, the pair status changes to simplex. You cannot delete a pair where the status
is V-Split.
Table 7 Pair Status versus Allowable Operations
Pair Status
Operation
Sim-
plex
Pend-
ing
Duplex
SP-Pend V-Split
Split
Resync
Resync-R Sus-
pend
Add Pair
OK
x
x
x
x
x
x
x
x
Split Pair
OK
OK
OK
x
x
x
x
x
x
Suspend Pair x
OK
OK
OK
OK
OK
OK
x
x
Resync Pair
x
x
x
x
OK
OK
x
x
OK
Reverse
Copy
Quick
Restore
x
x
x
x
x
OK
x
x
x
Delete Pail
x
OK
OK
OK
x
OK
OK
OK
OK
Table 8 Siz Pair Status
Status
Description
Host Status
S-VOL Access
T-VOL Access
Simplex
The volume is
not assigned to
a Siz pair. The
XP12000 storage
system accepts
read and write
I/Os for all simplex
volumes which are
not reserved.
S-VOL = SIMPLEX
T-VOL = SIMPLEX
N/A (there is no
S-VOL yet)
N/A (there is no
S-VOL yet). If the
volume is reserved
as a T-VOL, the
storage system
does not accept
read and write
I/Os. Read/write
access enabled
for HRX volumes.
Avoid read/write
operations.
Pending
The initial copy
operation is in
progress. No
update copy
operations are
performed.
S-VOL = PPRI-PNDG
T-VOL = PSEC-
PNDG
Read/write
enabled
Read/write-
disabled.
Read/write access
enabled for
HRX volumes.
Avoid read/write
operations.
44
Overview of Hitachi ShadowImage for z/OS Operations