* [Alain Fauconnet] 

> I know, I know... that would be my approach too eventually, but
> inquiring minds wants to know. After all if people have taken the pain
> writing drivers supporting this kind of RAID, they must have had some
> reasons doing so, right?

One advantage I can think of off the top of my head is that a lot of these
fakeraid controllers have a limited BIOS that allows you to boot from a
RAID-0 (or RAID-5 if they support that configuration).

With Linux MD RAID you can, AFAIK, only boot from RAID-1, though you could
of course have a small /boot on RAID-1 and have the rest on RAID-5, or have
/boot on one disk, swap on the other, and the rest a big RAID-0.

Fakeraid would also be an advantage if you want to dual boot with Windows,
unless somebody invented a Linux MD RAID driver for Windows without telling
me..  (dual booting is probably a bit unlikely for a server, though :)

If you really want to use fakeraid on Linux (perhaps just to try it out for
hack value) there is dmraid[1], which uses the device mapper to support the
RAID layout of various fakeraid cards.  I've never tried it myself, however,
so I can't really say much about it apart from the fact that it exists.

[1] http://people.redhat.com/~heinzm/sw/dmraid/

Øystein
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