HP XP P9500 Storage - Manual (Page 141)

command is issued. A read or write request from the host is allowed or rejected according to the
status.
Table 30 Snapshot Pairing Status
Secondary Primary Pairing Status P-VOL Status
R/W disable R/W enabled Unpaired (Snapshot) volume SMPL
( *1)
R/W disable R/W enabled The Snapshot available state allocated the resource. PAIR (PFUL)
R/W disable R/W enabled The preparing state allocates the resource for the
Snapshot. COPY
R/W disable R/W disable The copying state from Snapshot to the primary volume
by using restore option. RCPY
R/W enabled R/W enabled The differences of the updated data of the primary and
secondary volume are controlled with copying on write. PSUS (PFUS)
R/W disable R/W enabled ( *2) “PSUS” status owing to an internal failure. The
differences of the updated data for the Snapshot volume
are not controlled. PSUE (Error)
NOTE:
1
V-VOL unmapped to the S-VOL of a Snapshot will reply to a SCSI Inquiry, but Reading
and/or Writing is not allowed.
2
Reading and writing are enabled, as long as no failure occurs in the primary volume.
Pair status relationship to Snapshot commands
Table 31 (page 141) applies to a Snapshot context. It explains 1) what a pair status may be prior
to any RAID Manager command execution, 2) what the result would be after giving a RAID Manager
command, and 3) what the pair status may be if the RAID Manager command is Accepted.
Table 31 Pair status relationship to Snapshot commands
Snapshot Command -
pairresync pairsplit paircreate
Resync -S option -C option -E option -split No -split Pair Status
Rejected Acceptable Rejected Rejected Accepted*2 to
4 Accepted 2 SMPL 1
Acceptable Accepted 1 Accepted* Accepted* 5 Accepted* Acceptable COPYRCPY 2
Acceptable Accepted 1 Accepted 4 Accepted* 5 Accepted*4 Acceptable PAIR 3
Accepted* 2 Accepted 1 Acceptable Accepted* 5 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.
Snapshot operations 141