From owner-freebsd-questions@FreeBSD.ORG Sat Aug 14 03:42:18 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 643F31065679 for ; Sat, 14 Aug 2010 03:42:18 +0000 (UTC) (envelope-from ryan.coleman@cwis.biz) Received: from qmta11.emeryville.ca.mail.comcast.net (qmta11.emeryville.ca.mail.comcast.net [76.96.27.211]) by mx1.freebsd.org (Postfix) with ESMTP id 45E2E8FC08 for ; Sat, 14 Aug 2010 03:42:18 +0000 (UTC) Received: from omta16.emeryville.ca.mail.comcast.net ([76.96.30.72]) by qmta11.emeryville.ca.mail.comcast.net with comcast id u2jb1e0031ZMdJ4AB3iHhm; Sat, 14 Aug 2010 03:42:17 +0000 Received: from [10.0.1.9] ([76.113.183.74]) by omta16.emeryville.ca.mail.comcast.net with comcast id u3iF1e0061cjQTw8c3iGoq; Sat, 14 Aug 2010 03:42:17 +0000 From: Ryan Coleman Mime-Version: 1.0 (Apple Message framework v1081) Date: Fri, 13 Aug 2010 22:42:15 -0500 In-Reply-To: To: FreeBSD Questions References: <01DEC02A-DAE7-47B8-AD6C-3CCEFA98F311@cwis.biz> Message-Id: <8EBF0C2A-D766-4489-AC65-F06C620D1B3F@cwis.biz> X-Mailer: Apple Mail (2.1081) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Re: 5900 RPM drives X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 14 Aug 2010 03:42:18 -0000 I was actually looking at the Seagate Barracuda model... I'm upgrading = my RAID 5 of 8x1TB to something larger. $135 each: = http://www.newegg.com/Product/Product.aspx?Item=3DN82E16822148487 On Aug 13, 2010, at 10:28 PM, TJ Varghese wrote: >=20 >=20 > On Sat, Aug 14, 2010 at 9:52 AM, Ryan Coleman = wrote: > Can anyone give me any reasons to buy these over 7200RPMs for a RAID? = I may need to pinch pennies if I have to finance my next servers out of = pocket. Stupid idea, I know, but I really want to know if there's a = reason to skimp. >=20 >=20 > Specific models that you're considering would be good. For WD, if = you're referring to the WD's GreenPower (non-RAID Ed), there are 2 = gotchas >=20 > 1) no support for TLER any longer - this IMHO is a deal breaker for = RAID > 2) ridiculously low sleep times (6s) to maximize power savings - in a = server, this would cause extreme load cycles, however this setting can = be set to less extreme numbers using wdidle. >=20 > The main technical criterion for any HDDs to be used in a raid IMO = should be TLER support IMO. Speed/capacity would be secondary concerns. >=20 >=20 > regards, > TJ