HP XP7 Storage - Manual (Page 160)

If PVOL has non-reflected data in PAIR state:
Behavior of first pairsplit at T0 Behavior of OLD pairsplit at T0
PVOL_PAIR from/to SVOL_PAIR(WD) T0 PVOL_PAIR from/to SVOL_PAIR(WD)
PVOL_PSUS from/to SVOL_COPY(WE) T1: PVOL_COPY from/to SVOL_COPY(WD)
PVOL_PSUS from/to SVOL_SSUS(WE) T2: PVOL_PSUS from/to SVOL_SSUS(WE)
If PVOL has been reflected all data to SVOL in PAIR state:
Behavior of First pairsplit at T0 Behavior of OLD pairsplit at T0
PVOL_PAIR from/to SVOL_PAIR(WD) T0: PVOL_PAIR from/to SVOL_PAIR(WD)
PVOL_PSUS from/to SVOL_SSUS(WE) T1: PVOL_PSUS from/to SVOL_SSUS(WE)
•
The state changes for paircreate -split are:
Behavior of First paircreate -split at T0 Behavior of OLD paircreate -split at T0
SMPL from/to SMPL T0: SMPL from/to SMPL
PVOL_PSUS from/to SVOL_COPY(WE) T1: PVOL_COPY from/to SVOL_COPY(WD)
PVOL_PSUS from/to SVOL_SSUS(WE) T2: PVOL_PSUS from/to SVOL_SSUS(WE)
•
If you attempt the pairevtwait -s psus in PVOL_PSUS & SVOL_COPY state, then pairevtwait
will return immediately even if the S-VOL is still in SVOL_COPY state because PVOL is already
in PVOL_PSUS state. If you want to wait the "SVOL_SSUS" state, and then you must check the
status of the S-VOL becomes "SVOL_PSUS" via the return code using pairvolchk -ss command
on SVOL side or pairvolchk -ss -c command on PVOL side. Or you can use pairevtwait -ss
ssus on both PVOL and SVOL, pairevtwait -ss ssus -l on SVOL locally.
•
If you attempt the pairresync -restore or pairsplit -S in PVOL_PSUS & SVOL_COPY state, then
Business Copy will reject this command due to unable to perform. In this case, you need to
wait until the S-VOL state becomes SVOL_SSUS.
Table 34 Pair status versus Snapshot commands
Snapshot Command Pair Status
pairresync pairsplit paircreate
Resync -S option -C option -E option -split No -split
Rejected Acceptable Rejected Rejected Rejected Accepted 2 SMPL 1
Acceptable Rejected Rejected Rejected Rejected Acceptable COPY
RCPY 2
Acceptable Accepted 1 Accepted 4 Rejected Accepted*4 Acceptable PAIR 3
Accepted* 2 Accepted 1 Acceptable Rejected Acceptable Rejected PSUS
(PFUS) 4
Accepted* 2 Accepted 1 Rejected Acceptable Rejected Rejected PSUE 5
Accepted*: A command is accepted and issued; whether this command is executed or not depends
on the microcode version of the RAID storage system.
160 Data replication operations with RAID Manager