Veritas-bu

Re: [Veritas-bu] How to backup to multiple drives

2009-02-18 17:50:41
Subject: Re: [Veritas-bu] How to backup to multiple drives
From: <judy_hinchcliffe AT administaff DOT com>
To: <VERITAS-BU AT mailman.eng.auburn DOT edu>
Date: Wed, 18 Feb 2009 16:24:55 -0600
How many streams does your policy run for this data you mention.

The multiplexing refers to having more then one job(stream) going to a
tape drive.  If you are only running one job, it has no reason to use
two tape drives.
Based on what you set up:  SU=2 drives and each drive can have 2 streams
it would take 3 concurrent running streams before it would use the
second drive.

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of
dferguson
Sent: Wednesday, February 18, 2009 4:20 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] How to backup to multiple drives


I have a two drive library (msl 5000) with two LTO2 drives. When I
backup large data I would like it to split the data up and backup using
both drives. Is this a possibility?  I've been googling and found
multiplexing and I think I have enabled multiplexing or the storage unit
and set Max concurent write drives to 2 and checked the enable
multiplexing box and set maximum streams per drive to 2. But my backup (
sent via command line) is still only using one drive. 

Is there a point where NBU makes a decision on when to utilize the
second drive?

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