From owner-freebsd-current@FreeBSD.ORG Sun Oct 3 16:38:10 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 957B616A4CE for ; Sun, 3 Oct 2004 16:38:10 +0000 (GMT) Received: from update.ods.org (221056.ds.nac.net [66.246.72.188]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4781343D49 for ; Sun, 3 Oct 2004 16:38:10 +0000 (GMT) (envelope-from jd@ods.org) Received: from localhost (221056.ds.nac.net [127.0.0.1]) by update.ods.org (Postfix) with ESMTP id 606181A51C7 for ; Sun, 3 Oct 2004 12:38:09 -0400 (EDT) Received: from update.ods.org ([127.0.0.1]) by localhost (update.ods.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 40879-09 for ; Sun, 3 Oct 2004 12:38:08 -0400 (EDT) Received: from VPN-jd.ods.org (VPN-jd.ods.org [64.247.11.255]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by update.ods.org (Postfix) with ESMTP id E13231A51B4 for ; Sun, 3 Oct 2004 12:38:08 -0400 (EDT) Date: Sun, 03 Oct 2004 12:32:53 -0400 From: Jason DiCioccio To: freebsd-current@freebsd.org Message-ID: X-Mailer: Mulberry/3.1.3 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Virus-Scanned: by amavisd-new at ods.org X-Mailman-Approved-At: Mon, 04 Oct 2004 12:02:39 +0000 Subject: Serial ATA, Write Caching and Soft-Updates X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Oct 2004 16:38:10 -0000 Greetings! I'm just asking this question mainly out of curiosity. However, I know that Serial ATA drives can support 'native command queuing' (an improved version of tagged command queuing apparently). As a result, are serial ATA drives safe to use in a soft-updates+write caching enabled setup? Do they suffer from the same write caching issues that the PATA drives suffered from? Thanks! -JD-