From owner-freebsd-questions@FreeBSD.ORG Fri Dec 30 07:27:18 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E16E7106566C for ; Fri, 30 Dec 2011 07:27:18 +0000 (UTC) (envelope-from ufs.user@yahoo.com) Received: from nm40-vm5.bullet.mail.bf1.yahoo.com (nm40-vm5.bullet.mail.bf1.yahoo.com [72.30.239.213]) by mx1.freebsd.org (Postfix) with SMTP id 891718FC08 for ; Fri, 30 Dec 2011 07:27:18 +0000 (UTC) Received: from [98.139.212.146] by nm40.bullet.mail.bf1.yahoo.com with NNFMP; 30 Dec 2011 07:13:24 -0000 Received: from [98.139.215.251] by tm3.bullet.mail.bf1.yahoo.com with NNFMP; 30 Dec 2011 07:13:24 -0000 Received: from [127.0.0.1] by omp1064.mail.bf1.yahoo.com with NNFMP; 30 Dec 2011 07:13:24 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 916584.11372.bm@omp1064.mail.bf1.yahoo.com Received: (qmail 43815 invoked by uid 60001); 30 Dec 2011 07:13:24 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1325229204; bh=nSQEt5tqsLcOjNrrOwwW/x7UOkvIS1EzvngPlECxh94=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=A8OCf35LM7z3vLXUTBjiD4T2J9yHVoM2rdUNLrn6e77/GiiHiuwmnLEOivQxxXirgyldOqFFDbvDVMwDq6W9ZDYXunayqGGPGblUELkhZOFH10JgUw8wxHb+4WZ35XZbb4iu9vHlek/5JlFRIS8nDZBH7kzzDxYeD1uPeWgfDpY= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=gBg1VhamMnX3g7MxvQJvwlnNAuvzKcwi4WIh5NxwVRANNvKykTQtUpr1hmaSg71xH2WKyLOVEX/ciImJU9ZPb1zKRXbhN98yfr/Ns5wSBcm8NTHg/phaXDemJoIBIxoVs1ychP7TDcVYz11sufx833kVhZASIxcqyuYomAgacw4=; X-YMail-OSG: maMxW9QVM1mHZhp5lrq.77SMoATQKZw952E3PT2FrbgZQ15 1Dym71nrGE3Pbi5VCVwXIFG22fGLkLNWJtoktmILU1jYx9Q5GRTSXc6ylFSc ywQZ1226Wm3iHtI9dPzxcwuXoSDuEsewzzEYoiInPHsEZgx_j3mBqOgzzqFS XeILJWAIReg2SCfCIXBEMByXQ3TtqRvHwIjV.p1QQ5kVBzLYW_NigPyysC4S ndU1JNW5JWxxPtag.7bMUqeePUDTichPQ56ZULcn44td5lAkJwZ4mOTyXgz9 JOpdr0XV9oYVq_u6eBbOrtdWyLHG0u4j6x9zXbbAHzITfuf.MMrRVcmq_IRR Nawxjd_OoaPibZJvDMIPlXjIufzDsi99_JozY8Lklxg-- Received: from [24.179.213.102] by web140405.mail.bf1.yahoo.com via HTTP; Thu, 29 Dec 2011 23:13:24 PST X-Mailer: YahooMailWebService/0.8.115.331698 Message-ID: <1325229204.34713.YahooMailNeo@web140405.mail.bf1.yahoo.com> Date: Thu, 29 Dec 2011 23:13:24 -0800 (PST) From: UFS User To: "freebsd-questions@freebsd.org" MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Why do I feel like compact flash is more reliable than SSD ? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: UFS User List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Dec 2011 07:27:19 -0000 I have run a lot of different FreeBSD systems off (fileservers, firewalls, = routers, etc.) off of compact flash cards[1] and have never had a CF part f= ail.=0A=0AMost of these were read-only mode, but some of them were left mou= nted 'rw' for years (with no swapping, of course). =A0The bottom line is, t= hey never=0Afailed, and some were (and are) in the field for over 8 years n= ow.=0A=0ABut everyone I know (including me) has had an SSD fail, usually wi= th no explanation.=0A=0ASo is this just chance, or ... are CF cards really = a lot more reliable than SSD ?=0A=0AIt's sloppy, but I never once considere= d mirroring my CF boot devices, and now in 2011 I am actually buying two *d= ifferent* SSDs to put into a boot mirror=0Abecause I am afraid of mirroring= identical ones and they both die at identical times.=0A=0AComments ? =A0= =0A=0A=0A=0A[1] Plain old store-bough Sandisk parts - so a good brand, but = nothing special