From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Greaves Subject: Re: 1x 3ware controllers vs. 2x 3ware controllers Date: Sun, 01 Aug 2004 20:28:04 +0100 Sender: linux-raid-owner@vger.kernel.org Message-ID: <410D4444.8000302@dgreaves.com> References: <1091383022.11789.17.camel@tinny.home.foo> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1091383022.11789.17.camel@tinny.home.foo> To: "Scott T. Smith" Cc: Mikael Abrahamsson , Jim Buttafuoco , linux-raid@vger.kernel.org List-Id: linux-raid.ids -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Scott T. Smith wrote: | On Sun, 2004-08-01 at 08:24, Mikael Abrahamsson wrote: | |>On Sun, 1 Aug 2004, Jim Buttafuoco wrote: |> |> |>>I am switching all of my 3ware controllers over to Adaptec SATA raid |>>controllers. I am getting better performance with them. Jim |> |>I am quite curious about the 16port SATA controller Adaptec has now. Do |>you have any filesystem write figures for this controller under linux and |>ext3? | | | One main problem with the 16port controller, at least in JBOD mode, is | that there is not enough PCI bandwidth to fill the disks if you do large | writes. Thus two separate 8port controllers, on separate PCI busses, | should yield higher performance. | | OTOH, if you're doing small ops, or RAID1, it will probably be fine. | | (disclaimer -- I haven't tried the Adaptec boards yet, but they're on my | list, along with Highpoint's) | | Scott Highpoint have a multi port PCI-X card out (but no open drivers support it) Are there any others multi-sata PCI-X cards? I'm thinking about building a 2Tb SW RAID but will wait a few months because I want PCI-X or similar to get the bandwidth to the gigabit card. David -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBDURE8LvjTle4P1gRApWbAJ0f5UHlMUsxkx36qSbk59Ak1Vj/cwCcD5hw AruxO8CSNAM+4ixZioKYfQA= =cYtx -----END PGP SIGNATURE-----