Re: CentOS 6.2 software raid 10 with LVM - Need help with degraded drive and only one MBR

[Lamar Owen <lowen@xxxxxxxx>]

On Friday, March 02, 2012 04:18:48 PM Digimer wrote:
> 10 (one-zero) == a mirror of two stripped arrays. You can lose up to two
> drives, so long as they are both from the same strip set.

You really don't want a mirror of two striped arrays; you want a striped array of mirrors.

A striped array of mirrors is much more resilient to multiple drive failures than a mirrored set of striped arrays.  

See http://www.linux-mag.com/id/7928/?hq_e=el&hq_m=1151565&hq_l=36&hq_v=3fa9646c7f

What you're describing is RAID01, not RAID10.
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