Linux and RAID Matt_Domsch at
Fri Aug 9 10:47:00 CDT 2002

You don't mention what OS release you've got.  I'm going to assume it's at
least Red Hat Linux 7.0 or above.

> > I have a poweredge 6300 with one PERC 2 and I´m trying
> > add one PERC 3 DC for one Powervault
> This is my /etc/modules.conf:
> alias parport_lowlevel parport_pc
> alias eth0 e100
> alias scsi_hostadapter aic7xxx
> alias scsi_hostadapter aic7xxx
> #alias usb-controller usb-uhci
> How i must change its?

Here's what I don't understand - you say you've got a PERC 2 and a PERC
3/DC, but you've got no RAID drivers in your modules.conf file!  How's the
thing even boot before you add the PERC3?

> The PERC 2 has the BIOS enable for the machine start with its, OK?
> The new card PERC 3/DC has the BIOS disable, because this 
> card must connect
> with the POWERVAULT only, not with the internal disk
> the machine, where is the system, OK?

You don't mention which PERC2 you've got (there are a bunch, and two
different drivers).

If it's a PERC2 (4 channel card), you need the aacraid driver.
If it's a PERC 2/{SC,DC} single or dual-channel card, you need the megaraid
driver.  I assume this.
The PERC 3/DC uses the megaraid driver.
You need the aic7xxx driver loaded because you've got a CD-ROM attached to
the onboard SCSI channel.

So, you should have in /etc/modules.conf:
alias scsi_hostadapter megaraid
alias scsi_hostadapter1 aic7xxx
alias eth0 e100
#alias usb-controller usb-uhci
alias parport_lowlevel parport_pc

Now, if instead you've got the 4-channel PERC2 card, and that's your boot
drive, you need:
alias scsi_hostadapter aacraid
alias scsi_hostadapter1 megaraid
alias scsi_hostadapter2 aic7xxx
(then the rest)

Then remake your initial ramdisk, run lilo if needed, and reboot.


Matt Domsch
Sr. Software Engineer, Lead Engineer, Architect
Dell Linux Solutions
Linux on Dell mailing lists @
#1 US Linux Server provider for 2001 and Q1/2002! (IDC May 2002)

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