HP XP P9000 Continuous Access Journal User Guide

S-VOL accessP-VOL
access
DescriptionRAID Manager statusRWC status
Read OnlyRead/Write
4
The pair is synchronized. Updates to the P-VOL are
duplicated on the S-VOL.
PAIRPAIR
Read OnlyRead/Write
4
If data in the journal volume exceeds the threshold (80 %),
pair status changes to PFUL. The pair is not suspended; the
copy operation continues.
PFULRWC
displays this
status as PAIR
If the journal option, Inflow Control, is set to Yes when status
changes to PFUL, host I/O is delayed because update I/O
to the journal volume is delayed.
Read Only,
unless write
Read/Write
4
The pair has been split by the user and the P-VOL and S-VOL
are no longer synchronized.
SSUSPSUS
option is
enabled.
• The primary and secondary systems keep track of journal
data discarded during the split operation.
• When the operation is performed on the primary system,
the status of both the P-VOL and S-VOL changes to PSUS.
• When the operation is performed on the secondary
system, the status of the S-VOL changes to PSUS; the
primary system detects this and changes P-VOL status to
PSUS.
SSUS is the S-VOL’s split status name.
See also “PSUS types and behaviors” (page 69).
Read OnlyRWC:
Read/Write
4
The pair is suspended by the system due to an error; it is
not synchronized.
PSUEPSUE
RAID
• The primary and secondary systems keep track of journal
data discarded during the suspension operation.
Manager:
Read/Write
4
• The primary system keeps track of P-VOL tracks that are
updated while the pair is suspended.
if no error
in P-VOL
• When a Cnt Ac-J suspension condition is detected, the
primary system changes P-VOL and S-VOL status to PSUE.
If the secondary system detects the condition, it changes
the S-VOL status to PSUE; the primary system detects this
and changes P-VOL status to PSUE.
See also “PSUS types and behaviors” (page 69).
Read OnlyRead/Write
4
The pair is not synchronized and in transition from the PAIR
or COPY status to PSUS or PSUE status.
(No parallel RAID
Manager status)
Suspending
Read OnlyRead/Write
4
The pair relationship is being deleted. When the operation
completes, status changes to SMPL.
(No parallel RAID
Manager status)
Deleting
(releasing)
Read Only
2
Read/Write
1
(No parallel RAID
Manager status)
HOLD
• The pair or command devices are ready for the delta
resync operation. Incoming write data for the Cnt Ac-S
S-VOL is stored in the master journal volume.
• Operations allowed:
- Delta resync
- Pair-delete
- Change pair options
-Read/Write
1
Pair status is changing to HOLD so that the delta resync pair
can be created.
(No parallel RAID
Manager status)
HOLDING
3
Operations allowed on pairs in HOLDING status:
• Delta resync operation
• Pair release
• Change pair options
Monitoring pair activity and status 67