From owner-freebsd-questions@freebsd.org Thu Oct 15 06:26:45 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 2C5334343CD for ; Thu, 15 Oct 2020 06:26:45 +0000 (UTC) (envelope-from ml@netfence.it) Received: from soth.netfence.it (net-2-44-121-52.cust.vodafonedsl.it [2.44.121.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mailserver.netfence.it", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CBfSh1LtLz43jv for ; Thu, 15 Oct 2020 06:26:43 +0000 (UTC) (envelope-from ml@netfence.it) Received: from alamar.ventu (alamar.local.netfence.it [10.1.2.18]) (authenticated bits=0) by soth.netfence.it (8.16.1/8.15.2) with ESMTPSA id 09F6Qddd012216 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO) for ; Thu, 15 Oct 2020 08:26:39 +0200 (CEST) (envelope-from ml@netfence.it) X-Authentication-Warning: soth.netfence.it: Host alamar.local.netfence.it [10.1.2.18] claimed to be alamar.ventu Subject: Re: A couple of questions about SSDs To: freebsd-questions@freebsd.org References: <20201014121442.662e71c4@archlinux> <20201014174749.6df7572a.freebsd@edvax.de> <20201014202206.7c7886d0@archlinux> From: Andrea Venturoli Message-ID: Date: Thu, 15 Oct 2020 08:26:39 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 MIME-Version: 1.0 In-Reply-To: <20201014202206.7c7886d0@archlinux> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4CBfSh1LtLz43jv X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=pass (policy=none) header.from=netfence.it; spf=pass (mx1.freebsd.org: domain of ml@netfence.it designates 2.44.121.52 as permitted sender) smtp.mailfrom=ml@netfence.it X-Spamd-Result: default: False [-2.67 / 15.00]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:2.44.121.52]; MIME_GOOD(-0.10)[text/plain]; HAS_XAW(0.00)[]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.03)[-1.029]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; NEURAL_SPAM_SHORT(0.11)[0.110]; DMARC_POLICY_ALLOW(-0.50)[netfence.it,none]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.95)[-0.948]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:30722, ipnet:2.44.0.0/16, country:IT]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Oct 2020 06:26:45 -0000 On 10/14/20 8:22 PM, Ralf Mardorf wrote: > In my desktop PC are 5 SSDs. Four are connected to the mobos SATA 3 > connectors and one is connected to a SATA 2 connector. Four are 223.57 > GiB sized and one is 447.13 GiB sized. I'm to lazy to check how old > each of them is, but IIRC the oldest is around 3½ years old and the > vendor's software mentions that the "health" is at 64%, the system > drive is one of the newer SSDs, maybe around 2 years old, "health" 57%. So your SSDs seems to last 4-6 years. > In my experiences HDDs last for around 2 years, if you turn the computer > on and off very often and for around 7 years, if the computer runs more > or less 24/7. I'm currently typing on a box running on 13 years old HDs. They've been used on a server (so always on) for maybe 5-6 years, then demoted to a desktop machine and they've been cycle-powered daily for at least other 6. I even have older, still working, rust around. When an HD gets to small/slow for its purpose, I replace it with a bigger shinier one, but I just move the old one to a less demanding use, backups/archive being the lower step in their life. > However, my guess is, due to a lack of experiences with SSDs, that they > last for as long as HDDs do last. Seems not, then. bye & Thanks av.