RAID + Serial ATA on A7N8X-E Deluxe

[Alexander Dalloz]

Am Mo, den 13.06.2005 schrieb Rodrigo Malara um 19:52:

> I've just bought a A7N8X-E Deluxe motherboard and a pair of 80GB SATA
> hard drives in order to mirror them (RAID 1). 
> 
> In Windows 2000 it worked well (the operating system reports only one
> hard drive), but in Fedora Core 3 when I type fdisk -l it shows both
> disks and AFAIK it would not happen.
> 
> It seems that the 2.6 kernel is ignoring the RAID controller that is
> expected to give only one disk to the operating system. I've tried
> everything, including stripping (RAID 0), with no success. 
> The 2 disks are visible by the OS.

> Rodrigo Malara

This topic has been discussed here on the list in the past: you have no
real hardware RAID controller but a so called fake RAID or winraid (like
winmodem). It is basically a simple controller chip with BIOS controlled
RAID functionality provided by software.
I feel you are much better by using Linux software RAID (more
flexibility, better performance, no requirement for special driver
modules). Though, there is dmraid available, developed by Heinz
Mauelshagen:

http://people.redhat.com/heinzm/sw/dmraid/

dmraid (Device-Mapper Raid tool) discovers, [de]activates and displays
properties of software RAID sets (i.e. ATARAID) and contained DOS
partitions using the device-mapper runtime of the 2.6 kernel.

The following ATARAID types are supported on Linux 2.6:

Highpoint HPT37X
Highpoint HPT45X
Intel Software RAID
LSI Logic MegaRAID
NVidia NForce
Promise FastTrack
Silicon Image Medley
VIA Software RAID       *** NEW ***

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
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Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.27_FC2smp 
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