From owner-freebsd-questions@FreeBSD.ORG Wed Jun 23 00:40:08 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 423A916A4CE for ; Wed, 23 Jun 2004 00:40:08 +0000 (GMT) Received: from av1-2-sn4.m-sp.skanova.net (av1-2-sn4.m-sp.skanova.net [81.228.10.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id 09F0743D1D for ; Wed, 23 Jun 2004 00:40:08 +0000 (GMT) (envelope-from daniel_k_eriksson@telia.com) Received: by av1-2-sn4.m-sp.skanova.net (Postfix, from userid 502) id 52E0337EC7; Wed, 23 Jun 2004 02:39:52 +0200 (CEST) Received: from smtp2-1-sn4.m-sp.skanova.net (smtp2-1-sn4.m-sp.skanova.net [81.228.10.183]) by av1-2-sn4.m-sp.skanova.net (Postfix) with ESMTP id 428F837EA6 for ; Wed, 23 Jun 2004 02:39:52 +0200 (CEST) Received: from gadget (h130n1fls11o822.telia.com [213.64.66.130]) by smtp2-1-sn4.m-sp.skanova.net (Postfix) with ESMTP id 2B6D237E43 for ; Wed, 23 Jun 2004 02:39:52 +0200 (CEST) From: "Daniel Eriksson" To: Date: Wed, 23 Jun 2004 02:39:57 +0200 Organization: Home Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 Importance: Normal Subject: Multiple choices for RAID-0, best performance? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Jun 2004 00:40:08 -0000 With the recent addition of a geom-enabled vinum, and the discussed (but = not yet functional?) geom stripe module, we now have 4 different choices for software RAID-0 on ATA devices (the other two are regular vinum and ataraid). I'm currently using a mix of vinum and ataraid on one of my servers, but = I haven't been in a position to do any proper performance measurements yet (it's a production server). Are there any obvious performance differences between the different ways = of doing RAID-0? Any difference in resource usage? Also, will the RAID-0 performance of ataraid be affected a lot depending = on what controller is used? For example would there be any performance difference (transfer speed and/or system resource usage) between ataraid = on a HPT374-based card (such as the Highpoint RocketRAID 454) and one of = the new Promise cards (which we have really good drivers for afaik). Daniel Eriksson