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Re: [Veritas-bu] Architectural question (staging)
2010-05-05 16:28:24
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Thanks Ed but I'm confused. If I say that Netbackup can send 15 streams to a DSSU and then I have 15 clients sending streams all at once to that DSSU, wouldn't the data be more fragmented than if I sent only 1 stream? Could you elaborate a bit on how that works?
Thanks, Vic On Wed, May 5, 2010 at 4:05 PM, Ed Wilts <ewilts AT ewilts DOT org> wrote:
On Wed, May 5, 2010 at 2:57 PM, Victor Engle <victor.engle AT gmail DOT com> wrote:
So my question is how best to configure the DSSUs with the goal of
optimized de-staging. I will have 6TB to configure as desired on the
backup server. If I understand correctly, the more concurrent streams
allowed to the DSSUs, the slower the de-staging because of interleaved
backup streams. The DSSU consists of a set of files with each file being a backup image and you define the maximum size of each file within an image. There is no "interleaving". When you destage, one image at a time goes to tape.
Watch your fragment sizes and watch your disk file system fragmentation... .../Ed _______________________________________________
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