On Mon, Feb 02, 2004 at 03:58:27PM +1100, Neil Brown wrote:
> On Sunday February 1, keld@dkuug.dk wrote:
>
> I started work on a "raid10" personality a while back, which could do
> what you describe, or could stripe/mirror across 3 drives and other
> combination.
Sounds like the RAID1E and RAID5E of some of the IBM ServeRAID controllers...
1E: Works across minimum of 3 drives, with the stripes written as:
Drive: 1 2 3
a b c
b c a
d e f
e f d
Ie. you still lose half the disk space, but will work over unequal
number of wrives with still a single drive failure resilience and a full
speed read.
5E: minimum 4drives, similar story just a tad different (No, I've mislaid
the documentation :()
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