[CentOS] RAID 5 setup?

Robert Spangler mlists at zoominternet.net
Sat Mar 27 16:06:19 UTC 2010

On Saturday 27 March 2010 09:22, Ross Walker wrote:

>  > for all practical purposes its the same thing.     if it was really
>  > stripe then mirror, a naive mirror handler would think it would have
>  > to
>  > remirror both drives when one half of one of the stripesets failed and
>  > was replaced.     but in fact, the mirror handlres tend to be well
>  > aware
>  > of whats going on.      mirror 0+1  aand stripe that with mirrored
>  > 2+3,
>  > and its really all the same    the native raid10 in newer mdraid is
>  > cleaner because you don't end up with extra partial volume
>  > metadevices...
>  RAID0+1 is never a good configuration because a single drive failure
>  in a RAID0 stripe fails out the whole stripe, and with say an 4x2
>  RAID0+1, you are more likely to hit a disk failure with 4 drives in a
>  RAID0 then 2 in a RAID1.
>  That's why RAID1+0 came about.

Thnx for clearing this up.



Linux User #296285

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