The problem I had with flash backups was that the backup image is the
size of the filesystem, not just the used size of the filesystem. The
place where I expected the biggest gains from it was on large windows
file servers. Unfortunately, these were recently migrated with plans
for growth and at the time of my testing, 300GB of data on a 900GB
filesystem - backups running at double the speed was nice, but still
took longer - and not worth chewing the tape for. I may switch back to
flashbackup if those filesystems are ever aproaching 80% full.

On 7/18/05, Tom Burrell <tburrell_mn AT yahoo DOT com> wrote:
> Michael,
> 
> We have been experimenting with Flashbackup on NBU 5.0
> MP5 with excellent results!  We are backup 250 GB LUNS
> with approx. 14 Million files each on SAN connected
> Win2K3 servers, and cut backup time by about 50% with
> no serious overhead on the server.
> 
>  Your milage may vary, of course:  lots of small files
> will get better performance than a few large files.
> 
> I would talk to your sales rep about an eval license-
> try before you buy.  Minimal risk to you, and if they
> smell a sale they will help make sure that you get the
> tech support you need!
> 
> Note: you may have already done this, but make sure
> that you really have your infrastructure nailed first-
> we have found that firmware, network settings and NBU
> performance tuning really help too.
> 
> Tom Burrell
> tburrell_mn AT yahoo DOT com
> 
> 
> 
> 
> 
> 
> Hello All
> 
> As we have some windows file-servers which backup
> performance are very poor.
> 
> We have been thinking about using Flashbackup-Windows,
> so I would like to
> hear others experiences with this.
> 
> At the moment we can only do full backup/restore with
> Flashbackup-Windows,
> but we don't Advanced Client License installed which
> seem to be nessary.
> 
> Regards
> Michael
> 
> --
> Cybercity Webhosting (http://www.cybercity.dk)
> 
> 
> 
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