From mboxrd@z Thu Jan 1 00:00:00 1970 From: mru@kth.se (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Subject: Re: RAID5 over Serial-ATA success stories? Date: Thu, 08 Jan 2004 09:06:46 +0100 Sender: linux-ide-owner@vger.kernel.org Message-ID: References: <20040107223657.A5315@nettis.grimsta> <20040108085711.A2500@nettis.grimsta> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20040108085711.A2500@nettis.grimsta> (Daniel Brahneborg's message: 57:11 +0100") To: Daniel Brahneborg Cc: linux-raid@vger.kernel.org, linux-ide@vger.kernel.org List-Id: linux-raid.ids Daniel Brahneborg writes: > 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 disk= s. >> > Which Serial-ATA card are you using? Do you get decent performanc= e? >> > 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. That sounds rather odd. Have you reported this to the appropriate places? >> > 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 wit= h >> SATA converters, though. Works with both 2.4 and 2.6. > > Sounds good to hear. It's the second cheapest card for me. Beware that several people have reported some rather strange problems with the Highpoint cards. You should get a deal to take it back if it doesn't work. >> > 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 = as >> 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. Not really. The Adaptec 24xx cards cost about the same as the disks you attach to them. I ordered one from a while ago, but the shop went bankrupt before I got it, or at least their web site disappeared and they stopped answering mail or phone calls. >> > In case I have to replace my Silicon Image card, what should I rep= lace >> > 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 usual= ly >> better than those two. > > Why the warning about Promise? I've had some bad experience with them, that's all. They appear to be incompatible with Alpha machines, but probably work better in PCs. > 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. =46rom what I've heard, VIA have improved a bit of late, but they used to have a rather bad reputation. I don't know anything about the drivers, though. --=20 M=E5ns Rullg=E5rd mru@kth.se