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Backup for mid sized network NAS SAN - Need advice on what system to purchase

I have a network with 20 servers. each runs a seperate database. I'm trying to come up with a solution for a backup system that will be able to accomodate about 100gig of continuous backup. plus have a system to do archives to CD's or similar medium. The databases are run by SQL, and the servers are a mix of NT4 and 2000. All will eventually be 2000.

I would like to stay away from Tape, and move to something that I can do restores quicker as well as do snapshot backups during the day.

Thanks for any help

slotz

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chicagoan

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durindil

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chicagoan

If you're rolling your snapshots off to tape, the issue with the disk portion is bandwidth. Many low end NAS solutions don't have gigE and fewer allow fast ether channel or nic aggregation even an fast ethernet. Since mast don't allow direct-attach tape, the network can bottleneck your backups. If you device not to use tape, the viability of you backup disks starts to approach what you want on your servers.