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NAS storage... Do you use them?

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Regardless of your looking to get away from tape, you still need a way to send your backups away. A NAS or SAN is nice, if you can afford the entry costs, and the associated administrative headaches of setting up all the clients.

However, there is a major problem with a SAN for an enterprise: Common location physical disaster, almost a (albeit large) single point of failure. If tapes or remote backup or something of that ilk are NOT used, then a fire, building collapse, hurricane, civil society disruption, localized blackout or any number of area covering disasters will take you down entirely. In this case, your backup media will be affected just like your prime site. Tapes, blue-ray dvd's, removable disk packs, *anything* that can go off site to a nice safe cave or such is much to be desired.
The last company I worked with had their remote replication backup over redundant OC-nn dedicated fiber. The primary site was well out of the flood plain and in a building without windows to the data spaces, and hardened to withstand an old standard rated F4 tornado. (don't want to bother looking it up the new eF scale..)
The concern that some of raised was the backup site was still within 20 km of the primary business location. A little too close for some DRP types.
Bottom line: NAS ok for local user recovery, but don't bet yor job or your Disaster Recovery Plan on it.
The regulatory bottom line is also if HIPPA or SarBox or other such standards apply to your company, then I would not want to justify an onsite NAS to a regulator or auditor.