HP XP P9500 Storage - Manual (Page 67)

S-VOL access P-VOL
access Description RAID Manager status RWC status
Read Only Read/Write
4
The pair is synchronized. Updates to the P-VOL are
duplicated on the S-VOL. PAIR PAIR
Read Only Read/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. PFUL RWC
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. SSUS PSUS
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 Only RWC:
Read/Write
4
The pair is suspended by the system due to an error; it is
not synchronized. PSUE PSUE
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 Only Read/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 Only Read/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