100% vulnerable?  Really?  By 100, you mean *just* the data on the
disks...right.  So not really 100% since you aren't using it as a backup and
have all that data over there while it rebuilds.  So really it's not
vulnerable at all...

On Mon, May 11, 2009 at 12:10 PM, Tony B <ton...@gmail.com> wrote:

> What they don't warn you about in RAID school though, is that after a
> failure, when the RAID is being rebuilt, your data is 100% vulnerable!
> And this striping process can take 24 hours or more for large disks!
>
> How _likely_ is it that you'll have two failures in a row? Well, the
> drives *are* likely from right next to each other on the production
> line.
>
>
> On Mon, May 11, 2009 at 12:34 PM, Jeff Wright <jswri...@gmail.com> wrote:
> > Yes, RAID is more complex and it's not fool-proof.  RAID isn't
> > supposed to have any data security beyond what entails from a single
> > drive failure (or 2 with RAID 6).  Lose one drive with RAID 1 or 5 and
> > you've lost no data.  If you have hot-swap drives, you can stay up
> > through the drive replacement and array rebuild.
>
>
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