Veritas-bu

[Veritas-bu] Detecting marginal media

2002-08-30 11:00:03
Subject: [Veritas-bu] Detecting marginal media
From: david AT datastaff DOT com (David A. Chapa)
Date: Fri, 30 Aug 2002 11:00:03 -0400
Terry:

Hmm...This is what I would do.

Create the advanced logging directory, bptm

/usr/openv/netbackup/db/bptm

there  you can find out how long it takes to fill up the buffer before dumping 
it to tape, etc.

David


Quoting Terry Green <tgreen AT mitra DOT com>:

> I am using NBU 3.4.1 - Solaris master/media server, 2xDLT8000 drives on
> independent scsi channels.
>  
> >From time to time, we get backups or bpduplicates that run at a snail's pace
> because the media is just barely usable.  In this situation, the DLT drive
> shoe-shines a ton, but works.    NBU doesn't do anything about it, because
> from it's point of view, the tape is just being slow - no errors are
> returned.   
>  
> I'm wondering what data I might be able to get out of Netbackup to help
> detect this situation.   It would be nice to be able to see throughput from
> the point of view of the media, independent of the multiplexing, etc being
> used to feed the drive.   
>  
> Thanks
>  
> Terry Green
> Mitra Imaging
> Waterloo Ontario
> 




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