From owner-freebsd-fs@FreeBSD.ORG Mon Dec 19 22:47:00 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 1233) id 1F42F1065672; Mon, 19 Dec 2011 22:47:00 +0000 (UTC) Date: Mon, 19 Dec 2011 22:47:00 +0000 From: Alexander Best To: Poul-Henning Kamp Message-ID: <20111219224700.GA75581@freebsd.org> References: <20111219221617.GA70383@freebsd.org> <42198.1324333342@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42198.1324333342@critter.freebsd.dk> Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: can a wrong alignment cause a decrease in a hdd's life expectancy? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Dec 2011 22:47:00 -0000 On Mon Dec 19 11, Poul-Henning Kamp wrote: > In message <20111219221617.GA70383@freebsd.org>, Alexander Best writes: > > >ps: the hdd only gets mounted read-only! > > There is no known wear-effects in flash storage as long as you > only read. > > You may need to do refresh-writes every 5-10 years to avoid > tunnel-leakage bit errors, but most flash controllers use semi-long > ECC syndromes and will do so on first bit that gives an read error. this is a regular hdd i believe -- no ssd. at least when i plug it into my usb drive i hear the hdd spinning up and causing vibrations. i don't think that would be the case with an ssd. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > phk@FreeBSD.ORG | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by incompetence.