Jochen Wrote: > You could as well keep another copy of the data on a independent disc > (maybe even attached to the same computer), only mouted when needed for > backup, and keep a copy of the data there. Needless to say that you > could as well use RAID there. > > RAID is not the answer to all backup needs, but it keeps you fairly > safe from hardware failures. And if I'd have to choose from a > standalone single-disk NAS and a standalone PC with mirrored disks, I'd > always pick the latter. Agreed, but hardware failure is only one of many evils. I am sufficiently sensitized to the hazards of floods, fires, theft, etc. that I don't consider any data secure unless there's an offsite backup. I picked up an external USB drive that keep at the office, and bring home periodically to back up my music library and other home files. Sure, there's a lag during which a few CDs might not be backed up, but the risk there is low. I don't know the more subtle aspects of RAID, but I suppose one could do something similar by having an extra disk and rotating it in as a mirror, and taking the extracted disk offsite.
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