From owner-freebsd-fs@freebsd.org Tue Sep 29 13:52:06 2015 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8E495A0BE6F for ; Tue, 29 Sep 2015 13:52:06 +0000 (UTC) (envelope-from jg@internetx.com) Received: from mx1.internetx.com (mx1.internetx.com [62.116.129.39]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4B6B418E7 for ; Tue, 29 Sep 2015 13:52:06 +0000 (UTC) (envelope-from jg@internetx.com) Received: from localhost (localhost [127.0.0.1]) by mx1.internetx.com (Postfix) with ESMTP id 7C6644C4C145; Tue, 29 Sep 2015 15:52:03 +0200 (CEST) X-Virus-Scanned: InterNetX GmbH amavisd-new at ix-mailer.internetx.de Received: from mx1.internetx.com ([62.116.129.39]) by localhost (ix-mailer.internetx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id K4fAFmODOGbY; Tue, 29 Sep 2015 15:52:01 +0200 (CEST) Received: from [192.168.100.26] (pizza.internetx.de [62.116.129.3]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mx1.internetx.com (Postfix) with ESMTPSA id 43D2C4C4C81C; Tue, 29 Sep 2015 15:52:01 +0200 (CEST) Reply-To: jg@internetx.com Subject: Re: Cannot replace broken hard drive with LSI HBA References: <1443447383.5271.66.camel@data-b104.adm.slu.se> <5609578E.1050606@physics.umn.edu> <560A4640.3030200@internetx.com> <560A9461.8090300@physics.umn.edu> To: Graham Allan , =?UTF-8?Q?Karli_Sj=c3=b6berg?= , "freebsd-fs@freebsd.org" From: InterNetX - Juergen Gotteswinter Message-ID: <560A977C.1070102@internetx.com> Date: Tue, 29 Sep 2015 15:51:56 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <560A9461.8090300@physics.umn.edu> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Sep 2015 13:52:06 -0000 >From my Experience using SATA Disks on SAS Controllers, no matter if theres an Expander between or not or mixed, those Setups keep on beeing flakey / unreliable. I might work under certain conditions, but its nothing you can bet on. Garret Damore (Illumos Project) describes the problem more detailed here http://garrett.damore.org/2010/08/why-sas-sata-is-not-such-great-idea.html Am 29.09.2015 um 15:38 schrieb Graham Allan: > That could certainly be an issue in our case (it's all SATA, which I > guess at least is better than having it mixed). > > Although Supermicro do list some SATA drives as being tested compatible > with their chassis/expander, for example WD RE - not that we actually > have RE drives, it's what I would have preferred but we ended up with > Reds. I will say that I consulted informally with a WD field engineer > who felt that the Reds should work ok in this situation, and they have > generally tested quite well. No doubt the SATA RE model may well have > more solid firmware. > > Graham > > On 9/29/2015 3:05 AM, InterNetX - Juergen Gotteswinter wrote: >> Are there any Serial ATA Drives hooked up to the SAS Controller, maybe >> even with an Expander Backplane in between? >> >> Am 28.09.2015 um 17:06 schrieb Graham Allan: >>> I have seen this and keep experiencing it. I posted a question about it >>> a while back but I don't think there was much response.