[CentOS] Raid 10 questions...2 drive

Sat Sep 25 13:11:27 UTC 2010
Christopher Chan <christopher.chan at bradbury.edu.hk>

Jacob Bresciani wrote:
> RAID10 requires at least 4 drives does it not?
> Since it's a strip set of mirrored disks, the smallest configuration I 
> can see is 4 disks, 2 mirrored pairs stripped.

He might be referring to what he can get from the mdraid10 (i know, Neil 
Brown could have chosen a better name) which is not quite the same as 
nested 1+0. Doing it the nested way, you need at least 4 drives. Using 
mdraid10 is another story. Thanks Neil for muddying the waters!