Re: Docs and operation of RAID10, size limitations on 0.90

[Richard Michael <rmichael-raid@edgeofthenet.org>]

On Wed, Jul 30, 2008 at 04:56:38PM -0500, Jon Nelson wrote:
> On Wed, Jul 30, 2008 at 4:49 PM, Richard Michael
> <rmichael-raid@edgeofthenet.org> wrote:
> > Re-reading what I wrote, it's a mess of typos. :)  But, yes, I want to
> > remove half the disks on a regular basis, as off-site storage, and return
> > them to the array for periodic resync.
> 
> Basically what you want is a raid 51.
> 2x RAID5 (4 disks each) mirrored to form a RAID1.

Exactly.  Have you built such a config and managed to get the system
booting from the nested RAID1 (perhaps even with LVM inside)?  This is
where I am having difficulty.  Else, I'll just create an 8-way RAID1 of
100MB or so for /boot (as usual, as I mentioned elsewhere).

> Look also into using drbd.

Will do; thanks.

Richard