Hitachi VSP F1500

• Table 6-5 Pair status versus ShadowImage commands on page 6-22
shows the relationship between pair status and ShadowImage command
acceptance.
• Table 6-6 Pair status versus Copy-on-Write Snapshot commands on page
6-24 shows the relationship between pair status and Copy-on-Write
Snapshot command acceptance.
For details on pair status of TrueCopy for Mainframe, ShadowImage for
Mainframe, and Universal Replicator for Mainframe, see
Pair operations with
mainframe volumes on page 3-49.
Table 6-2 TrueCopy and ShadowImage pair status
Statu
s
TrueCopy Pair Status ShadowImage Pair Status Primary Secondary
SMPL Unpaired volume Unpaired volume R/W
enabled
R/W
enabled
PAIR Paired volume. Initial copy is
complete. Updates are processed
synchronously or asynchronously.
Paired volume. Initial copy is
complete. Updates are processed
asynchronously.
R/W
enabled
R enabled
COPY In paired state, but initial copy,
pairsplit, or resync operation is
not complete. Includes
COPY(PD), COPY(SP), and
COPY(RS) status.
In paired state, but initial copy,
pairsplit, or resync operation is
not complete. Includes
COPY(PD), COPY(SP), and
COPY(RS) status.
R/W
enabled
R enabled
RCPY Not used for TrueCopy In paired state, but reverse
resync operation is not complete.
Includes COPY(RS-R) status.
R enabled R enabled
PSUS
(split)
SSUS
(split)
In paired state, but updates to
the S-VOL data are suspended
due to user-requested pairsplit.
The RAID storage system keeps
track of P-VOL and S-VOL
updates while the pair is split.
In paired state, but updates to
the S-VOL data are suspended
due to user-requested pairsplit.
The RAID storage system keeps
track of P-VOL and S-VOL
updates while the pair is split.
R/W
enabled
R/W
enabled
when using
write enable
pairsplit
option
PSUE
(error)
or
PFUS
In paired state, but updates to
the S-VOL data are suspended
due to an error condition. (PSUE
is PSUS due to internal error.
PFUS is PSUS due to sidefile full.)
In paired state, but updates to
the S-VOL volume data are
suspended due to an error
condition. When a PSUE pair is
resynchronized, the RAID storage
system copies the entire P-VOL to
the S-VOL (same as initial copy).
R/W
enabled if
no error
occurs in
the primary
volume
R enabled
PDUB Used only for TrueCopy LUSE
pairs. In paired state, but
updates to one or more LDEVs
within the LUSE pair are
suspended due to an error
condition.
Not used for ShadowImage R/W
enabled if
no error
occurs in
the primary
volume
R enabled
Data replication operations with CCI
6-19
Command Control Interface User and Reference Guide