Veritas-bu

[Veritas-bu] 6.0 DSSU Behavior

2007-01-26 21:02:43
Subject: [Veritas-bu] 6.0 DSSU Behavior
From: ewilts at ewilts.org (Ed Wilts)
Date: Fri, 26 Jan 2007 20:02:43 -0600
On 1/26/2007 3:03 PM, Bahnmiller, Bryan wrote:
> The interesting thing I found was that destaging from a DSSU was
> significantly slower than writing those same files to tape using a
> regular backup process. If I recall, destaging was about 50% - 70% the
> speed of a tape backup. I tried many different fragment sizes to no
> avail. The destaging process evidently has a lot of overhead involved
> that slows down the tape write process.

We've been in discussions with NetBackup engineering about the poor 
destaging performance.  We don't have a solution yet, but it's an issue 
they're definitely aware of.

        .../Ed

-- 
Ed Wilts, Mounds View, MN, USA
mailto:ewilts at ewilts.org

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