HP XP P9500 Storage - Manual (Page 42)

The storage system automatically suspends a pair when it detects an error condition related to an
update copy operation, or when it cannot keep the pair mirrored.
Procedure 2 To suspend pairs
1. In the tree, click Replications > Local Replications.
2. In the Pairs tab, select the pair you want to suspend, and click More Actions > Suspend Pairs.
3. In the Suspend Pairs window, enter a Task Name and click Apply.
Pair split
Host updates to the primary volume and periodic copying to the secondary volume continue until
the pair is split. After the pair is split, updates continue to the primary volume but are not copied
to the secondary volume; data in the secondary volume is insured at the time of the split. Update
data that accrues during the split is stored in differential bitmaps until it is copied to the secondary
volume during resynchronization.
The primary and secondary volumes are synchronized when the pair status changes from
PSUS(SP)/PSUS or COPY(SP)/COPY to PSUS.
Related information
•
“Types of split operations” (page 42)
•
“Prerequisite information for splitting pairs” (page 43)
•
“Splitting pairs” (page 43)
•
“Running the consistency group pair-split ” (page 44)
Types of split operations
Four options are available when splitting a pair:
•
Steady split, which copies all differential data to the secondary volume and then splits the
pair.
•
Quick split, in which the pair is immediately split, so that the secondary volume is immediately
available for read and write I/O. Remaining differential data is copied to the secondary
volume in the background.
•
Consistency group pair-split, in which all pairs in a consistency group are split at the same
time. RAID Manager is required for this operation.
42 Performing pair operations