Date: Thu, 3 Jun 2010 23:04:31 +0200 From: Ulrich Drolshagen <u.drolshagen@t-online.de> To: freebsd-stable@freebsd.org Subject: Re: Support for ICH sata raid controler Message-ID: <201006032304.31539.u.drolshagen@t-online.de> In-Reply-To: <20100603204025.GA17762@icarus.home.lan> References: <201006032136.46625.u.drolshagen@t-online.de> <20100603204025.GA17762@icarus.home.lan>
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Am Donnerstag 03 Juni 2010 schrieb Jeremy Chadwick: > 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 > Indeed much to consider. Thank you Jeremy for your suggestions Ulrich -- http://www.ulrich-drolshagen.de
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