Download Configuration and Administration Guide 4.3

# cd /DATA_backup
# tar cvf /dev/st0 .
8b-4) Unmounting the snapshot
Unmount the file system mounted in step 8b-2).
# cd /
# umount /DATA_backup
# rmdir /DATA_backup
9) Stopping the proxy volume
After backing up to tape, stop Volume2 to protect data in proxy volume Volume2. If Class1 is a shared class, specify the "-e allnodes"
option to stop Volume2 on all the nodes.
# sdxvolume -F -c Class1 -v Volume2
Information
When using GDS Management View, select a proxy volume and execute [Operation]:[Stop Volume] in the Main Screen.
10) Breaking the proxy volume
When no more online backup is to be executed, cancel the relationship between master volume Volume1 and proxy volume Volume2.
# sdxproxy Break -c Class1 -p Volume2
See
When using GDS Management View, see "5.5.6 Breaking a Proxy."
11) Re-executing online backup
To perform online backup again, go back to step 3).
6.4.3 Instant Restore
By keeping proxy volumes parted from master volumes used for services, in the event of a data error in a master volume, data can be
restored back from the proxy volume to the master volume (unless background copying is in process after instant snapshot creation).
The master volume must be stopped temporarily for restoration, but you may start the master volume and make it accessible immediately
after the restore is initiated without waiting until the copying is complete.
Information
Restore from Tape)
If an error occurs in master volume data while the master volume used for the services operation and a proxy volume are joined, the same
error occurs in data of the proxy volume and instant restore becomes unavailable. If this happens, restore data back to the master volume
following the procedure described in "6.3.3 Restoring."
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