peter green wrote:

> they are also far more vulnerable to mechanical shock (e.g. your fire safe
> dropping down through the floors of your building and getting burried under
> rubble in the basement) than tapes and optical media.

Not sure your plastic-based optical media and tapes would survive the
temperature shock that comes with such a scenario :)

> imo the only secure way to do backups with hard drives is to have both spun
> up regularlly but stored in different buildings or better still on different
> sites. 

Quite easy to do. I'd say easier as with DVD. And since it's not such a
pain, you can actually backup to HDD every day. (Almost) nobody does that
with DVD.

Gerhard

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