[CentOS] RAID 5 setup?
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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