HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)

Pair Status Description Primary
Data
Volume
Access
Secondary
Data
Volume
Access
PFUL
Continuous Acc
ess
Journal monitors the total
amount of data
in the
journal volume. I f the
amount of data
exceeds the threshold (80%),
the
pair statu
s
changes from COPY or PAIR to
PFUL. The write data that inflowsismonitored
during the specified time (Data O verflow
Watch). The
time
period for monitoring
can be set us
ing
the Remote Web Console
software (default setting is 60 seconds).
Note: The PFUL status is displayed by RA ID
Manager. Remote Web Console displays this
status as PAIR.
Read / W rite
Read Only
PFUS
If thetimeperiodexceeds thespecified
monitoring time period, the pair status
changesfromPFULtoPFUS, andthe pair is
suspended.
Note: The PFUSstatusisdisplayed by RAID
Manager. Remote Web Console displays this
status as PSUS.
Read / W rite
Read Only;
Read and
write, if the
write option
is enabled
(Disable is set
for the default
setting).
SSWS
The data can be written to the secondary
data volume that is reassigned from the
primary data volume during the processing of
resynchronization (Takeover).
Note: The SSWS status is displayed by RAID
Manager. Remote Web Console displays this
status as PSUS or PSUE.
Read Only
Read / Wr ite
Suspending
This pair is not synchronized. This pair is in
transition from PA IR or COPY to PSUS/PSUE.
When
the split/suspend pair operation
is
requested, the status of all affected
pairs changes to Suspending. When the
sp
lit/suspend
operation is complete, the status
ch
anges to PSUS/PSUE.
Rea
d/
Write Read Only
Deleting (releasing)
This pair is not synchronized. This pair is in
transition from PAI R, COPY, or PSUS/PSUE
to SMPL. When the pairsplit-S operation is
requested, the status of all affected pairs
changes to Deleting (releasing). W hen the
pairsplit-S operation is complete, the status
changes to SMPL.
Read / W rite Read Only
Split Types (PS US)
Table 5 on pa ge 36 lists and describes the Continuous Access Journal split types. A user can split a
Continuous Access Jou rnal pair at any time after the i nitial co py operation is complete. The user must split
a
Continuous Access Journal pair in order to perform media maintenance on the primary da ta volume or
to access the secondary data volume (seconda ry data volume write enable ).
When a Continuous Access Journal pair is split by the user, the primary storage system and secondary
storage system ensure synchro nization by either completing or discarding any pending update copy
operations according to the user-specified pending update option (purge/flush). The primary storage
system and secondary storage system keep track of any journal data that was discarded during the
pairsplit operation. After the pair status changes to PSUS, the primary storage system stops performing
journal obtain operations for the pair, continues accepting write I/Os for the split Continuous Access
Journal primary data volume, and keeps track of the primary data volume tracks which are updated while
XP24000 Continuous Access Journal Software User a nd Reference Guide
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