From owner-freebsd-hardware@FreeBSD.ORG  Fri Jul 15 19:51:07 2011
Return-Path: <owner-freebsd-hardware@FreeBSD.ORG>
Delivered-To: freebsd-hardware@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 41871106566B
	for <freebsd-hardware@freebsd.org>;
	Fri, 15 Jul 2011 19:51:07 +0000 (UTC) (envelope-from lev@FreeBSD.org)
Received: from onlyone.friendlyhosting.spb.ru (onlyone.friendlyhosting.spb.ru
	[IPv6:2a01:4f8:131:60a2::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 0986F8FC14
	for <freebsd-hardware@freebsd.org>;
	Fri, 15 Jul 2011 19:51:07 +0000 (UTC)
Received: from lion.home.serebryakov.spb.ru (unknown
	[IPv6:2001:470:923f:1:3519:caf3:a69f:9cd7])
	(Authenticated sender: lev@serebryakov.spb.ru)
	by onlyone.friendlyhosting.spb.ru (Postfix) with ESMTPA id B7BE54AC38
	for <freebsd-hardware@freebsd.org>;
	Fri, 15 Jul 2011 23:51:05 +0400 (MSD)
Date: Fri, 15 Jul 2011 23:50:59 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD
X-Priority: 3 (Normal)
Message-ID: <96598785.20110715235059@serebryakov.spb.ru>
To: "freebsd-hardware@freebsd.org" <freebsd-hardware@freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=windows-1251
Content-Transfer-Encoding: quoted-printable
Subject: HDD: WD Green head parcking timeout setting under FreeBSD?
X-BeenThere: freebsd-hardware@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: lev@FreeBSD.org
List-Id: General discussion of FreeBSD hardware <freebsd-hardware.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>, 
	<mailto:freebsd-hardware-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hardware>
List-Post: <mailto:freebsd-hardware@freebsd.org>
List-Help: <mailto:freebsd-hardware-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hardware>, 
	<mailto:freebsd-hardware-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 15 Jul 2011 19:51:07 -0000

Hello, Freebsd-hardware.

  WD Cavair Green HDDs knows to have very short heads parking time out
(about 8 seconds), which leads to fast HDD resource exhaustion.

  WD has utility (wdidle.exe) to set larger idle time. But it is
DOS-based. Maybe, here is way to send this vendor command under
FreeBSD, without rebooting?

 I use ahci.ko.

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>