From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Brahneborg Subject: Re: RAID5 over Serial-ATA success stories? Date: Thu, 8 Jan 2004 08:57:11 +0100 Sender: linux-ide-owner@vger.kernel.org Message-ID: <20040108085711.A2500@nettis.grimsta> References: <20040107223657.A5315@nettis.grimsta> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: ; from mru@kth.se on Wed, Jan 07, 2004 at 10:56:32PM +0100 To: =?iso-8859-1?Q?M=E5ns_Rullg=E5rd?= Cc: linux-raid@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-raid.ids Thanks for the feedback, it's very valuable to me. On Wed, Jan 07, 2004 at 10:56:32PM +0100, M=E5ns Rullg=E5rd wrote: > Daniel Brahneborg writes: >=20 > > I'd like to hear some success stories for RAID5 on Serial-ATA disks= =2E > > Which Serial-ATA card are you using? Do you get decent performance= ? > > Is it stable with DMA enabled? Do you use the 2.4 or 2.6 kernel? > > > > I know this much: > > > > It doesn't work with Silicon Image. >=20 > What doesn't work? There are drivers, at least in 2.6. Raid should > care about what sort of disks you use. When using it for normal disks e2fsck reports bad blocks all over the disk. When used for RAID, I get corrupted data. Not much, maybe every second time for a file of 500MB. This is with the IDE driver. With the SCSI driver, my computer completely freezes when I activate my second network card (as I reported earlier, unfortunately still without a solution). RAID might work with that driver, but unless the network card problem is solved, that doesn't help me. > > It doesn't work with VIA (yet, anyway). > > It might work with HighPoint. >=20 > I've run RAID5 on a Highpoint RocketRAID 1540. I used ATA disks with > SATA converters, though. Works with both 2.4 and 2.6. Sounds good to hear. It's the second cheapest card for me. > > It probably works with Promise. > > I don't know if there's a driver for Adaptec. >=20 > Which Adaptec card? The 12xx cards are fakeraid, but are supported a= s > normal cards. The 24xx cards are true hardware RAID cards. Linux > drivers exist for these, too. It's the 12xx cards that I'm looking at. I don't want hardware RAID, since hardware RAID5 costs an infinite amount of money. > > In case I have to replace my Silicon Image card, what should I repl= ace > > it with? I'm currently leaning towards Promise TX4 (or TX2 if the = VIA > > driver is completed). >=20 > I stay as far away as I can from Promise and VIA. Anything is usuall= y > better than those two. Why the warning about Promise? The reason I want the VIA driver to work is that I've got two VIA connectors on the motherboard, so I only need a 2 port SATA card. /Basic