Date: Thu, 3 Jun 2010 13:40:25 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Ulrich Drolshagen <u.drolshagen@t-online.de> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: Support for ICH sata raid controler Message-ID: <20100603204025.GA17762@icarus.home.lan> In-Reply-To: <201006032136.46625.u.drolshagen@t-online.de> References: <201006032136.46625.u.drolshagen@t-online.de>
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On Thu, Jun 03, 2010 at 09:36:46PM +0200, Ulrich Drolshagen wrote: > we are about to aquire a new Primergy TX150. I can not find any information on > support of the Intel ICHx sata raid controller in the Hardware Notes of 8- > Stable. Does anybody know? All revisions of the ICHxx series are supported (ICH3 to ICH10 I can confirm). If you plan on using the RAID functionality of the chipset (otherwise known as "MatrixRAID" or "Matrix Storage Technology"), don't bother[1]. Instead, enable AHCI on the controller (usually in the system BIOS) and use one of FreeBSD (software/OS-level) RAID/RAID-like implementations such as gmirror, gvinum, or ZFS. I'd also recommend using ahci.ko instead of ataahci.ko for AHCI support. achi.ko provides a AHCI/SATA-to-CAM translation layer (which means you gain benefits like NCQ; disks show up as adaX), while ataahci.ko (the default) does not use CAM (and does not support NCQ; disks show up as adX). You can use ahci.ko by placing 'ahci_load="yes"' in /boot/loader.conf, or when booting a FreeBSD installation medium, dropping to the loader prompt and typing "load ahci" then "boot". [1]: http://en.wikipedia.org/wiki/Intel_Matrix_RAID -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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