06-21-2013 10:04 AM
Hi Symantec world
In my enviroment i have two nodes and they have backup luns on the two nodes the luns are not shared on the nodes how can i set up an efficient backup from the set up above, is there another better way to do it
Thanks,
Mig31
Solved! Go to Solution.
06-21-2013 01:40 PM
If the LUNs are not shared then you cannot do offhost backup which reduces the load on the host CPU and memory, but you can do a snapshot so you reduce the load on the I/O as the live data and data been read for backup are separate. Example:
Create mirror for snapshot:
vxassist -g diskgroup snapstart live_vol backup_lun
Then to snap of to backup:
vxassist -g diskgroup snapshot live_vol backup_vol
Then you can snapback so that volume is ready to be snapshot again for your next backup:
vxassist -g diskgroup snapback backup_vol
Doing a snapshot also means you have a point-time-copy of the data, rather than your data changing while backing up.
Mike
06-21-2013 01:40 PM
If the LUNs are not shared then you cannot do offhost backup which reduces the load on the host CPU and memory, but you can do a snapshot so you reduce the load on the I/O as the live data and data been read for backup are separate. Example:
Create mirror for snapshot:
vxassist -g diskgroup snapstart live_vol backup_lun
Then to snap of to backup:
vxassist -g diskgroup snapshot live_vol backup_vol
Then you can snapback so that volume is ready to be snapshot again for your next backup:
vxassist -g diskgroup snapback backup_vol
Doing a snapshot also means you have a point-time-copy of the data, rather than your data changing while backing up.
Mike
06-23-2013 02:48 PM
Thanks Mike
Mig31