From owner-freebsd-scsi@FreeBSD.ORG Wed Jan 8 23:17:58 2014 Return-Path: Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 39119108 for ; Wed, 8 Jan 2014 23:17:58 +0000 (UTC) Received: from khavrinen.csail.mit.edu (khavrinen.csail.mit.edu [IPv6:2001:470:8b2d:1e1c:21b:21ff:feb8:d7b0]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 034621B7C for ; Wed, 8 Jan 2014 23:17:57 +0000 (UTC) Received: from khavrinen.csail.mit.edu (localhost [127.0.0.1]) by khavrinen.csail.mit.edu (8.14.7/8.14.7) with ESMTP id s08NHu6U013143 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL CN=khavrinen.csail.mit.edu issuer=Client+20CA); Wed, 8 Jan 2014 18:17:56 -0500 (EST) (envelope-from wollman@khavrinen.csail.mit.edu) Received: (from wollman@localhost) by khavrinen.csail.mit.edu (8.14.7/8.14.7/Submit) id s08NHuj6013140; Wed, 8 Jan 2014 18:17:56 -0500 (EST) (envelope-from wollman) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <21197.56484.67992.739053@khavrinen.csail.mit.edu> Date: Wed, 8 Jan 2014 18:17:56 -0500 From: Garrett Wollman To: "Steven Hartland" Subject: Re: Attempting ATA TRIM on SAS devices? In-Reply-To: References: <21197.39676.138433.937002@khavrinen.csail.mit.edu> <430F34AB88D44C4BAF31DDC7AD214137@multiplay.co.uk> <21197.47504.93295.771468@khavrinen.csail.mit.edu> X-Mailer: VM 7.17 under 21.4 (patch 22) "Instant Classic" XEmacs Lucid X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.4.3 (khavrinen.csail.mit.edu [127.0.0.1]); Wed, 08 Jan 2014 18:17:56 -0500 (EST) Cc: freebsd-scsi@freebsd.org X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Jan 2014 23:17:58 -0000 < said: > I know its spec says its SAS but can you plug this drive into a > SATA controller such as on board Intel controller? Not easily; it's in a separate enclosure. It does have the standard dual-port SAS connector on it, and we are running it dual-ported (active/passive, not active/active, at least for the moment). > If so does work and then it correctly support delete's? I don't have any way to confirm this. We're just using these drives as ZFS cache, so it doesn't make a huge difference to us one way or the other. -GAWollman