01-25-2012 10:36 AM
I've been reading allot about this and getting many different answers so I'm looking for clarity on the question above. I have a Policy that only has one client but there is a lot of data. When I kick the policy off it will monopolize the 10 LTO5 tape drives that I have. This large backup is low on importance but needs to get done monthly.
NetBackup 7.1.0.3 Windows Master\Media
NetBackup 7.1.0.3 Media
Thank You
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01-26-2012 07:05 AM
you can have a lot of storage units - and they can be more than just the number of tape drives you have.
If you want to make sure the a policy uses only 1 drive (like the hot catalog backup)
then create a storage unit of just 1 tape drive and have the policy use that storage unit.
01-26-2012 12:25 AM
Set "Limit jobs per policy" in the policy for the server. All streams from the server will start, but only the configured number in "Limit per jobs policy" will go active.
Limit jobs per policy
http://www.symantec.com/docs/HOWTO34477
01-26-2012 12:35 AM
I agree with Nicolai - also, if you disable allow multiple streams in the policy, you will only send one steam, when then can only go to one drive, so this would work as a solution also.
Martin
01-26-2012 02:06 AM
There is a good section in older versions of NBU Admin Guide II explaining Multiplexing, multistreaming policy limits, etc and how jobs are assigned to drives. For some or other reason I cannot find this section in 7.1 manuals, although still very relevant.
See chapter 1 of NBU 6.5 Admin Guide II for Windows http://www.symantec.com/docs/TECH52804
01-26-2012 02:32 AM
01-26-2012 07:05 AM
you can have a lot of storage units - and they can be more than just the number of tape drives you have.
If you want to make sure the a policy uses only 1 drive (like the hot catalog backup)
then create a storage unit of just 1 tape drive and have the policy use that storage unit.
01-26-2012 07:12 AM
I love NetBackup ...so many differnet ways to do exactly the same thing ....
01-26-2012 07:28 AM
I agree there are many ways to do this :) I chose this way since it was fast and clean and forces the policy to use how many drives I say
Thank You
02-01-2012 07:12 AM
Don't forget about MPX value, if you MPX 4 it will put 4 streams on the same drive. So if you limit jobs per policy to 8 and MPX at 4, two drives will be used.