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Date: Thu, 3 Mar 2005 09:52:31 -0600
From: Dan Nelson <dnelson@allantgroup.com>
To: Marco Pizzi <marco@pizzi.name>
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cc: freebsd-questions@freebsd.org
Subject: Re: SCSI problem on a IBM xSeries x206
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In the last episode (Mar 03), Marco Pizzi said:
> I've a problem with a IBM xSeries x206 server. This server is
> equipped with an Adaptec AIC7901 Ultra320 SCSI RAID card, and the two
> SCSI disks are configured as RAID1 in the bios card. I've installed
> FreeBSD 5.3, but the system go on to see the two SCSI disks (sd0 and
> sd1); not the logical RAID1 unit. If I launch the command "pciconf
> -lv" the output is the following:
> 
> ahd0@pci3:4:0:  class=0x010400 card=0x005f9005 chip=0x808f9005 rev=0x10 
> hdr=0x00
>     vendor   = 'Adaptec Inc'
>     device   = 'AIC-7901 Ultra320 HostRAID Controller'

HostRAID is software-based RAID, similar to the software ATA RAID
managed by the ataraid driver and the atacontrol command.  An
enterprising coder could probably modify geom_mirror to recognize
whatever disk metadata that HostRAID stores.

-- 
	Dan Nelson
	dnelson@allantgroup.com