HP XP7 Storage - Manual (Page 73)

5. For Secondary Volume Write, specify whether data can be written to S-VOLs in the mirror
while it is split.
•
Enable: The host writes data to S-VOLs in the mirror. Available only when the selected
mirror’s Attribute is Master. If Restore, Disable is used automatically.
•
Disable: The host does not write data to S-VOLs in the mirror.
6. For Split Mode, specify whether data is written to S-VOLs in the mirror before the split operation
runs.
•
Flush: Copies all update data from to S-VOLs in the mirror before the split.
•
Purge: Prevents update data from being copied to S-VOLs in the mirror before the split.
Uncopied data is copied to the S-VOL when the pair is resynchronized.
7. Click Finish.
8. In the Confirm window, review the settings and enter a task name in the Task Name box.
9. Click Apply to save your settings to the system.
Creating point-in-time copies
Continuous Access Journal Z allows you to make Point-in-Time (PiT) copies of volumes in the same
journal. Point-in-Time describes a copy of data made when you it.
Prerequisite information
Review the prerequisite information in “Splitting Cnt Ac-J Z pairs ” (page 71) .
Procedure 12 To make PiT copies of the volumes in a journal
1. Stop all write I/Os from hosts to P-VOLs in the journal.
2. Split the mirror. Make sure to specify Flush for Split Mode.
3. When the status of all pairs in the journal changes to Suspend, the operation is completed.
Resume write I/O to the P-VOLs.
Creating point-in-time copies 73