From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id F31011382C5 for ; Sat, 23 May 2020 21:35:24 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 2CA05E089C; Sat, 23 May 2020 21:35:19 +0000 (UTC) Received: from covici.com (debian-2.covici.com [166.84.7.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id DD62FE0884 for ; Sat, 23 May 2020 21:35:18 +0000 (UTC) Received: from ccs.covici.com (ccs.covici.com [70.109.53.110]) (authenticated bits=0) by covici.com (8.15.2/8.15.2/Debian-14~deb10u1) with ESMTPSA id 04NLZjXV017810 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT) for ; Sat, 23 May 2020 17:35:46 -0400 Received: from ccs.covici.com (localhost [127.0.0.1]) by ccs.covici.com (8.15.2/8.15.2) with ESMTPS id 04NLZE3g4032631 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT) for ; Sat, 23 May 2020 17:35:14 -0400 Received: (from covici@localhost) by ccs.covici.com (8.15.2/8.15.2/Submit) id 04NLZEe54032630; Sat, 23 May 2020 17:35:14 -0400 Date: Sat, 23 May 2020 17:35:14 -0400 Message-ID: From: John Covici To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Seagate ST8000NM0065 PMR or SMR plus NAS SAS SATA question In-Reply-To: <20200523153940.p5v7gvjgd2kokwez@grusum.endjinn.de> References: <659f766d-a697-08fc-baeb-9e4356c0a58e@gmail.com> <80139b7f-6f39-beb7-c35b-f577f982423e@youngman.org.uk> <5359072.DvuYhMxLoT@lenovo.localdomain> <20200523153940.p5v7gvjgd2kokwez@grusum.endjinn.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.8 EasyPG/1.0.0 Emacs/26 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) Organization: Covici Computer Systems Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Archives-Salt: 7e79d1ad-276a-4168-83e8-f24e76a58557 X-Archives-Hash: f9fc020e5eb2b915f35fb6f52b58d631 On Sat, 23 May 2020 11:39:40 -0400, David Haller wrote: > > Hello, > > On Sat, 23 May 2020, Michael wrote: > >On Saturday, 23 May 2020 00:31:48 BST Rich Freeman wrote: > >> On Fri, May 22, 2020 at 5:40 PM antlists wrote: > >> > On 22/05/2020 19:23, Rich Freeman wrote: > >> > > A big problem with drive-managed SMR is that it basically has to > >> > > assume the OS is dumb, which means most writes are in-place with no > >> > > trims, assuming the drive even supports trim. > >> > > >> > I think the problem with the current WD Reds is, in part, that the ATA-4 > >> > spec is required to support trim, but the ATA-3 spec is the current > >> > version. Whoops ... > >> > >> Probably was thought up by the same genius who added the 3.3V reset > >> pin to the SATA standard. > > > >Is there a way to determine if a drive on sale is SMR *before* > >purchase? > > WD Red WD*EFRX are PMR. > WD Red WD*EFAX are SMR (AFAIK, could be, that some are PMR). > > ISTR, that the "Red Pro" are all PMR (so far). How about WD4001FFSX-68JNUN0? I hope its pmr. -- Your life is like a penny. You're going to lose it. The question is: How do you spend it? John Covici wb2una covici@ccs.covici.com