Splitting Continuous Access Xp Pairs (Pairsplit-R); Continuous Access Xp Split Types (Psus) - HP StorageWorks XP12000 User Manual

P-VOL of pair
LUN 03
LUN 05
LUN 00
LUN 04
LUN 01, 02
Difference Management: Measurement method Continuous Access XP uses to manage differential data
for the pair: Auto, Cylinder, or Track. The default is Auto. When you select Auto, either Cylinder or
Track is selected depending on basic size of the logical unit (LU).
Asynchronous parameters
C/T Group: Consistency group for new pairs (Async only). All Continuous Access XP Asynchronous
pairs must be assigned to a consistency group.
Error level: Error level for Continuous Access XP Async pairs.
• Group: When the specified pair is suspended, all Continuous Access XP Async pairs in the same
group are suspended, even if the failure affects only that pair and not the entire group.
Select Group for all Continuous Access XP Async volumes essential to disaster recovery.
LU: If the failure affects only the specified pair, only that pair is suspended. A failure that affects
•
an entire group always results in suspension of all pairs in the group and all other affected
Continuous Access XP pairs.
Suspended Continuous Access XP Async S-VOLs with LU should not be used for disaster recovery.

Splitting Continuous Access XP pairs (Pairsplit-r)

Use the Pairsplit-r command to split Continuous Access XP pairs. When the Pairsplit-r command is
selected, the Pairsplit-r pane appears. Use the Pairsplit-r pane to select Pairsplit-r options for the pairs.
You can split a Continuous Access XP pair only after the initial copy operation is complete. For further
information about split Continuous Access XP pairs, see
Priority
The MCU starts initial copy operations for LUNs 03, 05, 00, and 04
immediately, starts LUN 01 when one of the first four initial copy operations
1
is complete, and starts LUN 02 when the next initial copy operation is
complete. If more Continuous Access XP pairs are created, the MCU also
2
prioritizes initial copy operations by time requested, so all pairs in the first
group are started before any pair in the next group is started.
3
4
5
Continuous Access XP split types
Continuous Access XP user guide
(PSUS).
107