I have 5+ TB of production data on a couple of NetApp filers. A good chunk of it changes on a daily basis and we do send tape backups off-site for protection.
For availability protection, I'd like to also set up a cheap NAS box elsewhere on my LAN that keeps a loose mirror of the production filers. I'm constrained to using NFS for data transfer.
Is there some economical software out there that I can run on a PC to keep some kind of loose asynchronous mirroring with the production filers?
I don't know about "economical" software but a good solution for what you're trying to do is the NetApp NearStore R100 with the SnapVault software. This provides some very well integrated capabilities for making backup copies of file systems onto a less expensive NAS box. If you don't want to do that, I'd suggest using the Snapshot copy software from NetApp and then use a system utility to copy the "snapshotted" file system to your other box.
Evaluator Group, Inc.
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