Date: Thu, 7 Jun 2007 15:03:18 -0400 (EDT) From: "Matthew Hagerty" <matthew@digitalstratum.com> To: rick-freebsd@kiwi-computer.com Cc: freebsd-hardware@freebsd.org Subject: Re: Promise TX2300 array not detected. Message-ID: <25389.192.85.50.1.1181242998.squirrel@24.56.193.117> In-Reply-To: <20070607164653.GB95991@keira.kiwi-computer.com> References: <4662E72B.70003@digitalstratum.com> <4662F5BF.4090709@razik.de> <4663496A.40202@digitalstratum.com> <466718DC.2030600@razik.de> <46674449.6090109@digitalstratum.com> <46678017.6080602@fluffles.net> <21250.192.85.50.1.1181233456.squirrel@mundomateo.com> <20070607164653.GB95991@keira.kiwi-computer.com>
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On Thu, June 7, 2007 12:46 pm, Rick C. Petty wrote: > On Thu, Jun 07, 2007 at 12:24:16PM -0400, Matthew Hagerty wrote: > >> >> After the second install, everything came up on the ar0 array >> and worked fine. I ran some basic stress tests and was getting 16MB/sec >> write speed and 46MB/sec read. >> >> So, I'm off to find a "real" SATA2 PCI RAID card... :-( >> > > "real" RAID cards cost an order of magnitude more than fakeraid cards. > What is your reason behind getting real hardware RAID? From my own > personal testing and online research, software RAID outperforms most real > RAID cards. So if your reasoning is based on performance gain, you may > be in for another shock. If your reasoning is so that you can multi-boot > different OSes without requiring drivers, then you may have a compelling > reason to go to hardware RAID. However, most cases fakeraid is good > enough. > > -- Rick C. Petty > > My reasoning for a hardware RAID is so I can set it and forget it. If a drive fails (I'm setting up a mirror), I want to be able to just swap the drive and carry on without worrying about having to do something at the BIOS or OS level (controller should rebuild the mirror). Performance in my case is tertiary to reliability and stability. The TX2300 might have been the wrong choice, but you would not have known from reading the marketing material... The TX2300 was also blowing errors taskqueue timeout errors (http://www.mail-archive.com/freebsd-hardware@freebsd.org/msg01541.html) on the first machine I had it in, so now I'm a little skeptical about using the card. Matthew
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