iSCSI GbE to SAS/SATA II RAID Subsystem
84
User Manual
4.4.3 Rollback
The data in snapshot VD can rollback to original VD. Please follow the steps.
1.
Select
“/ Volume configuration / Snapshot”
.
2.
Mouse moves to the gray button next to the Snap VD number which user
wants to rollback the data; click
“Rollback”
.
3.
Done, the data in snapshot VD will rollback to original VD.
Rollback has some constraints as described in the following:
1.
Minimum RAM size required for enabling rollback is
1GB
.
2.
When making a rollback, the original VD cannot be accessed for a while. At the
same time, the system connects to original VD and snapshot VD, and then
starts rollback.
3.
During rollback, data from snapshot VD to original VD, the original VD can be
accessed and the data in VD just like it has finished rollback. At the same time,
the other related snap VD(s) can not be accessed.
4.
After rollback, the other snapshot VD(s) after the VD which is doing rollback
will be deleted.
IMPORTANT! Before executing rollback, it is better to dismount the
file system for flushing data from cache to disks in OS first. System
sends pop-up message when user executes rollback function.
