HP XP7 Storage - Manual (Page 63)

S-VOL access P-VOL access Description RAID Manager status RWC status
Read Only,
unless write Read/Write 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 “Cnt Ac-J PSUS types and behaviors”
(page 65) .
Read Only RWC:
Read/Write The pair is suspended by the system due to an error;
it is not synchronized. PSUE
3
PSUE
RAID
• The primary and secondary systems keep track of
journal data discarded during the suspension
operation.
Manager:
Read/Write if
no error in
P-VOL
•
The primary system keeps track of P-VOL tracks that
are updated while the pair is suspended.
• 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 “Cnt Ac-J PSUS types and behaviors”
(page 65) .
Read Only Read/Write 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 The pair relationship is being deleted. When the
operation completes, status changes to unpaired. (No parallel RAID
Manager status) Deleting
(releasing)
Read Only
1
Read/Write (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 Pair status is changing to HOLD so that the delta resync
pair can be created. (No parallel RAID
Manager status) HOLDING
2
Operations allowed on pairs in HOLDING status:
•
Delta resync operation
• Pair release
•
Change pair options
If the delta resync operation is run on a pair in
HOLDING status, the operation could fail. If you specify
Entire for the delta resync Failure field on the Change
Journal Option dialog box, differential data is copied
to an S-VOL.
Monitoring pair activity, status, license capacity 63