[Veritas-bu] RE: Minimising nightly tape count

Create a storage unit on media server A that only has a single drive defined
in it.  Send your A, X, Y, & Z backups to that storage unit name.  It'll
restrict the backup to one drive.  

You could even multiplex for speed.

-M

-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of Roland
Gerlach
Sent: Monday, June 21, 2004 4:28 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] RE: Minimising nightly tape count


We remove the weekly and monthly tapes from our library to off-site storage.
I'm trying to reduce the number of tapes sent off-site and I've noticed that
the tapes always contain backups from a single media server - therefore the
*minimum* number of tape used in a single backup window would be the same as
the number of media server.

Consider the following setup:  Two shared tape drives. Three media server:
A, B, C.  Media server A also backups X, Y, Z across the network.
 
The minimum number of tapes that could be used by this configuration would
be:
Tape 1 - backup A, backup X, backup Y, backup Z
Tape 2 - backup B
Tape 3 - backup C

What I normally see is that media server A's backup will run at the same
time as one of the network backups resulting in the use of an extra tape:
Tape 1 - backup A, backup Y, backup Z
Tape 2 - backup X
Tape 3 - backup B
Tape 4 - backup C

Is there a way that I can reduce the number of tapes used in a backup
window?  E.g. restrict the number of simultaneous backup jobs performed by a
media server.

I hope I've made my question clear.

Thanks in advance.

Cheers,
Roland.
--
Tell me and I'll forget, show me and I may remember,
involve me and I'll understand -- Chinese proverb.


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