[CentOS] Multiple RAID support in CentOS?
christopher.chan at bradbury.edu.hk
Mon Feb 1 05:24:03 UTC 2010
> RAID 10
> RAID 1+0 (or 10) is a mirrored data set (RAID 1) which is then striped
> (RAID 0), hence the "1+0" name. A RAID 1+0 array requires a minimum of
> four drives: two mirrored drives to hold half of the striped data,
> plus another two mirrored for the other half of the data. In Linux MD
> RAID 10 is a non-nested RAID type like RAID 1, that only requires a
> minimum of two drives, and may give read performance on the level of
> RAID 0.
Please do note that md raid10 IS different from doing nested md raid1+0.
The md raid10 module does other fancy stuff.
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