On Sun, Apr 22, 2007 at 11:02:00PM -0700, Michael Armida wrote:
> My installation saga continues into it's fourth week and I've narrowed
> down some of the problems in setting up my dual-boot system. To recap:
>
> - I have an ASUS m2n SLI mobo with 4 identical SATA drives
> - I would like to use two drives each for two raid1s for windows and debian
>
> My current issue is getting a setup that plays well with BIOS and
> booting. Here are the restrictions on the game as far as I can tell:
>
> - Windows doesn't like software raid (at least, not without the "server"
> version)
> - You can't mix and match arrays and non-arrays, meaning the
> pseudo-hardware onboard raid must either include all four drives in two
> arrays, or none (all software).
>
Two ideas that may not help. :)
1. Buy a SATA card (no raid) for debian to use, leaving the
on-board fake raid for 'doze.
2. Install debian on all four drives and use one of the
virtualization systems (e.g. Xen, but there are many others),
and install 'doze in a virtual box.
For (2), since you want raid1 you have a couple of choices:
a) two separate raid1 arrays then a raid0 array made of both, with
LVM over top.
b) two separate raid1 arrays then LVM over top with the LVs
striped.
c) single 4-disk raid5 array with LVM on top.
Option c gives you the most space efficiency (3 drives worth of data on
4 drives). In any event, raid arrays can't be easily reconfigured;
think of them as monlithic. To add space later, create a new array with
new disks, make the array a PV and add it to the applicable VG. That's
the joy of LVM.
YMMV.
Doug.
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