Re: Different sized disks for RAID1+0 or RAID10.

[Bill Davidsen <davidsen@tmr.com>]

Kelly Byrd wrote:
> I've currently got a pair of identical drives in a RAID1 set for
> my data partition. I'll be getting a pair of bigger drives in a
> bit, and I was wondering if I could RAID1 those (of course) and
> then RAID0 the two differently sized mds. Even better, will RAID10
> let me do this? 
>   

RAID-10 will let you do this, read past threads of this list for 
discussion of using the "far" option to gain performance.
> I don't need to grow the current RAID1 into this new beast, I've
> got a place I can copy the existing data so I can start from
> scratch.
>
> I imagine the answer is: "sure RAID10 / RAID0 let's you do this,
> but you don't get the striping performance benefit" for some of
> the data", which would be ok with me until the smaller drives go
> bad and I replace them.
>   

Replacing the smaller drives could be an adventure if you plan to go to 
larger replacement drives. I don't recall the issues involved with using 
larger partitions and RAID-10, there's another issue for you to research.

-- 
bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979