[ILUG] AMI megaraid controller on RedHat 6.1

[Michael Hinds]

Hi Lads (& lasses),

I'm trying to get my SCSI array working with RedHat 6.1 on a server I've
inherited without much luck.

Here's what I have:

Dell PowerEdge 4200 with 3x9Gb SCSI drives
Some sort of American Megatrends PCI RAID controller
On board Adaptec RAID controller

I've disabled the onboard Adaptec controller because that doesn't seem
to pick up any drives (obviously when I've connected the disk array to
it).

On boot up, the AMI BIOS says it's found 3 logical drives, but Linux
only detects /dev/sda. If I try to use fdisk on /dev/sdb it says
"/dev/sdb is not a valid block device", although I think the device
nodes are created properly.

The worst thing is that I have development Oracle databases on the disk
that *is* detected, so I'm loathe to start messing with the disk
configuration in the BIOS for fear of losing Oracle.

Does anyone know why it isn't picking up my other 2 disks? And am I
completely stupid, or are the archives of this list not searchable?

Thanks,

Michael Hinds