Software Manual

ShadowImage for z/OS user guide 33
SP-Pend The status becomes SP-Pend when the Steady
Split mode is selected for the split operation.
All S-VOL updates prior to the split command
are being copied to the T-VOL. When these
updates are complete, the split T-VOL is
identical to the state of the S-VOL when the
split started. The
XP128/XP1024/XP10000/XP12000 rejects
writes for
SP-Pend T-VOLs.
S-VOL = PPRI-PNDG
T-VOL = PSEC-PNDG
Read/write. Read/write
disabled.
V-Split The status becomes V-Split when the Quick
Split mode is selected for the split operation.
Only the S-VOL differential data is being
copied to the T-VOL in background. The
XP128/XP1024/XP10000/XP12000
accepts writes for V-Split T-VOLs. The V-Split
pairs cannot be deleted.
S-VOL = PPRI-SUSP
T-VOL = SIMPLEX
Read/write. Read/write,
can be varied
online.
Split The XP128/XP1024/XP10000/XP12000
stops performing update copy operations for
split pairs and starts accepting write I/Os for
split T-VOLs. The
XP128/XP1024/XP10000/XP12000 keeps
track of all updates to the split S-VOL and
T-VOL so the pair can be resynced accurately
and quickly.
S-VOL = PPRI-SUSP
T-VOL = SIMPLEX
Read/write. Read/write,
can be varied
online.
Resync The XP128/XP1024/XP10000/XP12000
does not accept write I/Os for resync
T-VOLs.
When a split pair is resynchronized in normal
mode, only the S-VOL differential data is
copied to the T-VOL. When a suspended pair
is resynchronized, the entire S-VOL is copied
to the T-VOL. No update copy operations are
performed during resync operation.
S-VOL = PPRI-PNDG
T-VOL = PSEC-PNDG
Read/write. Read/write
disabled.
Resync-R The XP128/XP1024/XP10000/XP12000
does not accept write I/Os for resync-r
T-VOLs or S-VOLs. When a split pair is
reverse resynchronized, the
XP128/XP1024/XP10000/XP12000 copies
only the T-VOL differential data to the S-VOL.
The reverse resync cannot be performed on
suspended pairs. No update copy operations
are performed during reverse resync or quick
restore.
S-VOL = PPRI-PNDG
T-VOL = PSEC-PNDG
Read/write
disabled.
Read/write
disabled.
Suspend The XP128/XP1024/XP10000/XP12000
does not perform update copy operations to
a suspended T-VOL. The
XP128/XP1024/XP10000/XP12000 marks
the entire S-VOL track map as differential
data so the entire S-VOL is copied to the
T-VOL when the pair is resumed. Use resync
command to resume a suspended pair.
Reverse resync and quick restore cannot be
used to resume suspended pairs.
S-VOL = PPRI-SUSP
T-VOL = PSEC-SUSP
Read/write. Read/write
disabled.
Table 8 ShadowImage for z/OS pair status (continued)
Status Description Host Status S-VOL Access T-VOL Access