peter Wrote: 
> Sorry, but RAID 1 is no replacement for backups. Your data is not only
> at risk from hardware failure but also from human error. If you
> inadvertently type rm -rf / tmp/* (note the extra blank) with
> sufficient rights under linux, you're screwed (yeah, done that).

Agreed. RAID doesn't stop you from being stupid. But a backup e.g. on
DVD doesn't stop you from leaving the DVDs lying in the sun, either.
I'm not saying that RAID 1/5 is the end all, be all solution, but it
always depends on how much effort (time, money and hardware wise)
you're willing to spend.

Mounting the music partition read-only and mounting it only rw when
necessary (e.g. when adding new music) already stops you from doing
most of the not-so-clever things, including the above mentione rm -rf
;)

> Actually, the best (and cheapest, easiest) option in the case of most
> music stores (which tend to rarely change) is to use a second
> (non-RAID) disk and nightly synchronisations using something like rsync
> (local or over the network). I'm lazy as well but my crontab is very
> patient and perseverant. Ideally you would do this with an off site
> machine, but another local machine or even a seperate drive in your
> single machine would be ok too. 

Sure, if one's willing to have not just one, but two or even more PCs
running, this is even better. Just make sure your rsync doesn't do a
full sync and also delete files ;) 

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.


-- 
Jochen
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