RE: [cobalt-users] RAQ4 restore on a RAQ3i machine possible?

["Chris Demain" <cdemain@xxxxxxxxxxx>]

> > No problem at all - you don't need to upgrade the processor you just
> > end up with a 300Mhz machine running RaQ4 software :-)  FYI if you
> > have a later RaQ3 and you want to open the box you might be able to
> > add a hard drive on the second channel and restore it as a RaQ4R :-)
>
> I think you mean that the later RaQ 3 models had two separate IDE
> controllers on the motherboard, just like the RaQ 4r uses. I do not
> believe you can run software RAID on two drives when one is a master and
> one is a slave, both on the same cable.  You need two masters, which is
> the way the 4r ships.
>

Yes and no.  You're right in that this is the way RAID /should/ be done with
IDE, but it can be done with m/s drives.  Because the IDE bus can only write
to one drive per channel at a time, there is an obvious performance hit
incurred when running RAID levels other than Linear.

http://www.linux.com/howto/Software-RAID-HOWTO.html for more info.