12-10-2015 01:29 AM
NBU 7.6.0.4
i know that a policy can be configured to use a pool of tapes, for say, monthly backups but how do you tell NBU to use a particular cartridge?
we have a new backup policy wherein i have to use 7 tapes for daily diff backups, 4 tapes for weekly full backups, and 12 tapes for monthly indefinite full backups. if i'm going to recycle the 7 daily tapes, how can i control that?
as far as i can tell, NBU works like a RAID-5 array where the data resides is strewn across the array. in short, one has no control where the data lands.
Solved! Go to Solution.
12-10-2015 01:48 AM
Netbackup was never designed for micro-managing. If you want to backup to specific tapes, you have to put them in a specifc pool.
Set the retention correctly and when the tapes are full and backups start to expire, the tape will be come ready for use again once the last backup image expires.
12-10-2015 03:14 AM
Mirco management requirement.
Netbackup does it all for you - there is no need to sort backup into specific tapes.
Rino19ny - two point that speak again backup to specific tape
Just a frindly advice ...
12-10-2015 03:47 AM
12-10-2015 01:48 AM
Netbackup was never designed for micro-managing. If you want to backup to specific tapes, you have to put them in a specifc pool.
Set the retention correctly and when the tapes are full and backups start to expire, the tape will be come ready for use again once the last backup image expires.
12-10-2015 02:41 AM
Create a seperate volume pools for daily,Weekly and monthly and move manually desired cartidges to pool which you want to use for backup.
12-10-2015 03:14 AM
Mirco management requirement.
Netbackup does it all for you - there is no need to sort backup into specific tapes.
Rino19ny - two point that speak again backup to specific tape
Just a frindly advice ...
12-10-2015 03:47 AM
12-10-2015 05:18 AM
Agree with Marianne (and others).
It becomes a nightmare to manage, NBU is not designed to be used that way, unlike say Backup Exec which I believe caters for Monday tape, Tuesday Tape and so on.
The idea for NBU, is you throw a load of tapes at it, and let NBU worry about what data is where.
12-10-2015 06:23 AM
"you throw a load of tapes at it, and let NBU worry about what data is where"
Possible the shortest and best description of how Netbackup tape handling work :D
12-10-2015 07:11 AM
Additionally - default Netbackup behavior - even if you have available tapes in a pool, if a tape reaches the end, NetBackup will grab a tape from scratch FIRST before trying to use another empty tape already in your pool.
I agree with others - review what is the problem you are trying to solve by doing this?
12-10-2015 11:48 AM
"as far as i can tell, NBU works like a RAID-5 array where the data resides is strewn across the array. in short, one has no control where the data lands"
not exactly but a pretty good analogy :)
12-10-2015 01:46 PM
You could disable/deconfigure all robotic library function and manually load the tapes yourself.
I haven't done that in about 16 years, and then my life was made simpler by implementing a robotic tape library and NetBackup.