Installing Ubuntu Server 8.10 with Raid 1

[jasonmichel]

Have an old windows server that crashed and i am wiping it out and putting ubuntu server 8.10 on it.. only problem i have is its currently in a hardware Raid 1 and ubuntu sees them as 2 different drives not one.. so i have SCSI 3 and SCSI 4..how can i get it to realize its a mirror? heres what the screen says

SCSI3 (0,0,0) (sda) - 251.0 GB ATA "Drive model"
#1 Primary 78.6 GB B NTFS
#2 Primary 172.3 GB NTFS
PRI/LOG 65.8 MB Free Space


SCSI4 (0,0,0) (sda) - 251.0 GB ATA "Drive model"
#1 Primary 78.6 GB B NTFS
#2 Primary 172.3 GB NTFS
PRI/LOG 65.8 MB Free Space

[Bemk]

Have you got a hardware or software RAID controller?

If you've got a hardware controller you should configure the two disks to become one in the BIOS and use the alternate cd to install (that's the way I did it a couple of weeks back).

cheapscotchron gave me this link. It is on Suse, and I think it won't work that way in Ubuntu, however you can always try.

[jasonmichel]

it's a hardware raid. are you talking on the board Bios or the hardware controller bios?

[Bemk]

I don't exactly know, this stuff is kind of new for me. I'm only a 16 year old boy you should know.

I had 4 drives in the system I had to configure and had to activate 2 and to form them as one disk. I did this by pressing ctrl+a while booting the BIOS and waiting for the controller to come on-line.

I don't exactly know how all of this worked, I just told you my experience and hoped it would help you.

One question though, isn't it already a mirror? Both disks are sda ...That means the system sees them as the same disk.

[jasonmichel]

actually i have a typo above SCSI4 is Sdb not sda. Because its a hardware raid1 it should only be recognized as 1 disc, that's what windows see's it as. that's why i'm wondering if i am missing something in the setup. I think i might pop in a slackware or RHEL 5 disc and see if they see any difference

[Bemk]

Alright, well in that case you are supposed to have the installer see 2 disks. That's because you have two groups of disks. I don't exactly know how the controller can be configured because I just had some lucky guess to get it work.

If I am correct you should be able to remove the group of scsi4 and add the drives that came available to the scsi3 group.

I'm not sure, and you should probably get help from others. I am not really experienced. Remember: I might have set a RAID system up, but I only did it once and as a 16 years old boy I think I can feel lucky.