From owner-freebsd-stable@FreeBSD.ORG Thu Aug 18 08:47:28 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 4B92F106564A for ; Thu, 18 Aug 2011 08:47:28 +0000 (UTC) (envelope-from yuri@rawbw.com) Received: from shell0.rawbw.com (shell0.rawbw.com [198.144.192.45]) by mx1.freebsd.org (Postfix) with ESMTP id 218848FC0A for ; Thu, 18 Aug 2011 08:47:27 +0000 (UTC) Received: from eagle.yuri.org (stunnel@localhost [127.0.0.1]) (authenticated bits=0) by shell0.rawbw.com (8.14.4/8.14.4) with ESMTP id p7I8lQAc037584 for ; Thu, 18 Aug 2011 01:47:27 -0700 (PDT) (envelope-from yuri@rawbw.com) Message-ID: <4E4CD19E.5070108@rawbw.com> Date: Thu, 18 Aug 2011 01:47:26 -0700 From: Yuri User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:5.0) Gecko/20110716 Thunderbird/5.0 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: WD Advanced Format: do I need to do something special? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Aug 2011 08:47:28 -0000 WD has sectors of the size 4kB in their latest hard drives, which is different from the traditional 512B. http://www.wdc.com/advformat http://wdc.custhelp.com/app/answers/detail/a_id/5655 These articles assert that something special should be done in OS to enable high performance of such drives. For ex. WD recommends to install some latest drivers of particular version. But what about FreeBSD? Should it be configured in some special way too for these drive to perform well? Is it aware of 4kB sector size? Yuri