From owner-freebsd-arm@freebsd.org Sun Jan 22 00:43:15 2017 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F2504CB0E9E for ; Sun, 22 Jan 2017 00:43:15 +0000 (UTC) (envelope-from jordanhubbard@icloud.com) Received: from pv35p22im-ztdg05131101.me.com (pv35p22im-ztdg05131101.me.com [17.133.189.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id D521C794 for ; Sun, 22 Jan 2017 00:43:15 +0000 (UTC) (envelope-from jordanhubbard@icloud.com) Received: from process-dkim-sign-daemon.pv35p22im-ztdg05131101.me.com by pv35p22im-ztdg05131101.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) id <0OK500700OIAKS00@pv35p22im-ztdg05131101.me.com> for freebsd-arm@freebsd.org; Sun, 22 Jan 2017 00:43:15 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=icloud.com; s=4d515a; t=1485045794; bh=ouhO3VO6DM/cVBuQIvGLTQB09EO3ryqRGoM0KcWD/rA=; h=Content-type:MIME-version:Subject:From:Date:Message-id:To; b=L8qRulB/BxZ9pUNs4F597zXvR4//uT3dsculxomfv10P3Q4IJdN3GN1IfFt0mYUh4 qEHkCZJhFC8iN+BwO7YrbJai/VREyrT4LaQgkM3CsVDbG0IRsxnrj1GbxWTx0qU+/a wiZ0EJ+JfF+Al2G+uOAOBm8rUWgL/Wozdt4Y9WEzc1njEuJRA0oT3VDKSiL6VNRMNC SvJ/Ach7nri90O//CXJpw4WvjjLBcI7AQwtf95x/fAQCJiDqAXY7fhvZFObyPX6q51 8ywiIwWydHoefRNCS53uOYNUqyx++xw9jLCwaARHbk4EVn3sQD+q6qLCzKO44EJ+fT Wl9WtQHdDzisQ== Received: from [10.11.111.236] (50-250-239-90-static.hfc.comcastbusiness.net [50.250.239.90]) by pv35p22im-ztdg05131101.me.com (Oracle Communications Messaging Server 7.0.5.38.0 64bit (built Feb 26 2016)) with ESMTPSA id <0OK500LK6OO17M30@pv35p22im-ztdg05131101.me.com>; Sun, 22 Jan 2017 00:43:14 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-01-21_17:,, signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 clxscore=1034 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1603290000 definitions=main-1701220009 Content-type: text/plain; charset=us-ascii MIME-version: 1.0 (Mac OS X Mail 10.2 \(3259\)) Subject: Re: how to measure microsd wear From: Jordan Hubbard In-reply-to: <7bb4a12d-9b5a-2a81-1ce4-5290e2639a9b@denninger.net> Date: Sat, 21 Jan 2017 16:43:12 -0800 Cc: freebsd-arm@freebsd.org Content-transfer-encoding: quoted-printable Message-id: <8C5C59C9-9AF3-4596-9B36-A792EDE05768@icloud.com> References: <16821b7c-e300-97fc-36e5-a508b22c21b8@zyxst.net> <1485021485.34897.185.camel@freebsd.org> <1d757b3b-67d2-b29b-ba01-89b462b0019f@denninger.net> <1485025911.34897.199.camel@freebsd.org> <7bb4a12d-9b5a-2a81-1ce4-5290e2639a9b@denninger.net> To: Karl Denninger X-Mailer: Apple Mail (2.3259) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Jan 2017 00:43:16 -0000 > On Jan 21, 2017, at 3:40 PM, Karl Denninger = wrote: > [ SD cards can fail ] I have to second the assertion that even the comparatively pricy SanDisk = Ultra SD cards can fail in production scenarios all the time, nor do = they even need to be used in a more advanced filesystem role. I go = through a lot of those cards just using them to shoot a lot of GoPro = footage (video and still photos) and I usually get a few weeks out of = each card, filling it almost entirely with footage several times a day, = before it write locks and is ready for the bin. This is why I also = shoot a lot of redundant footage with multiple GoPros, and anyone using = these cards extensively for digital photograph or video will tell you = the same. - Jordan