Digital BW, The Print

On 2/12/2011 9:11 AM, kwalsh74 wrote:
>
>
> Just to add a little more to the discussion, remember a key point:
>
> RAID is not a backup!!!!
>

Of course not.  My recommendation was that the *back-up* storage
should be in a redundant RAID 1 "mirror" configuration.  (Yes, I know
I wrote RAID 0 in my original message.  That was an error).

I'll repeat this again: backups to spinning storage should be
to at least a RAID 1 mirrored pair.  This greatly reduces the chance
that your backup storage will fail when you actually need it.

I also recommend that the "system" storage should be a RAID 1
pair.

> RAID protects against just one thing, hard drive failure. That is it. That is not necessarily even the most likely failure,
>
Have you read this?

http://labs.google.com/papers/disk_failures.pdf

Dana



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