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 A0B4F1382C5 for ; Wed, 24 Jun 2020 04:26:23 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 5FF83E0919; Wed, 24 Jun 2020 04:26:13 +0000 (UTC) Received: from smtp.hosts.co.uk (smtp.hosts.co.uk [85.233.160.19]) (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 16957E088C for ; Wed, 24 Jun 2020 04:26:12 +0000 (UTC) Received: from host86-157-102-29.range86-157.btcentralplus.com ([86.157.102.29] helo=[192.168.1.64]) by smtp.hosts.co.uk with esmtpa (Exim) (envelope-from ) id 1jnwzB-0003Lf-5k for gentoo-user@lists.gentoo.org; Wed, 24 Jun 2020 05:26:10 +0100 Subject: Re: [gentoo-user] Re: Testing a used hard drive to make SURE it is good. To: gentoo-user@lists.gentoo.org References: <6d77acb3-5754-06cb-b8ef-2f1a5d7d8084@gmail.com> <20200615231836.xje3kkkihsxrvhaz@grusum.endjinn.de> <158351d5-27cc-88d0-951c-893d0b5ad8aa@gmail.com> <1be400f1-9f5f-4e4a-ba8d-0fb7f8609a14@www.fastmail.com> <51f37de0-c955-c114-56bd-672a9e064e24@gmail.com> <27641ea5-ecc3-4e7c-a799-139680335d6b@www.fastmail.com> From: Wols Lists Message-ID: <5EF2D5E0.1030507@youngman.org.uk> Date: Wed, 24 Jun 2020 05:26:08 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.7.0 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 In-Reply-To: <27641ea5-ecc3-4e7c-a799-139680335d6b@www.fastmail.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Archives-Salt: 0363de23-a03d-4c4d-80eb-83cdd2a34a6c X-Archives-Hash: 8c16dcf693f25bb4359f97c8e6ba48fe On 23/06/20 19:32, Sid Spry wrote: > The danger of SMART is that rate of false negatives is so high (IME) that > you might erroneously think a drive is not going to fail and putting off a > backup. A good backup policy should mitigate this, but you still might plan > around drive lifetime SMART predicts before realizing they are or can be > bad predictions. Thing is, SMART is best at predicting PLATTER FAILURE. Expecting it to tell you that other parts of the drive are going to fail is like expecting a car mechanic to inspect your plumbing :-) And it's probably the marketeers closing the stable door after the horse has bolted - platters USED to be the least reliable part of the drive. Now we've got lead-free eco-solder it's the PCB that's most likely to fail ... Cheers, Wol