Thanks for that Charlie. I'll have a look at that link.
But I have quite a few reasons for wanting to use the RocketRAID 404 card. And the few hairs that I still have on my head are rapidly turning grey anyway.
Firstly, I actually have the RocketRAID card in my hand right now. - It came from one of our BEEG servers that had its drives and RAID cards upgraded. So I have the RocketRAID card to play with.
Secondly, the machine that I intend using as an SME server is an old Pentium II machine whose ROM BIOS doesn't want to have anything to do with the 2 spare 120GB IDE drives that I have lying around. If I attach these drives to the RocketRAID card, I can install and run Mandrake 9.1 out of the box and RedHat 8 with a bit of tweaking. So I know that this is one way around the ROM BIOS problem.
Thirdly, I can use the RocketRAID card for quite a variety of RAID options. Your software RAID is RAID 1 mirroring. On the RocketRAID card, I can use RAID 0 (Striping), RAID 1 (mirroring), RAID 10 (combination of mirroring and striping) and RAID 5 (combination of parity data and striping).