Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Jolly Roger Newsgroups: comp.sys.mac.system Subject: Re: How does OS-X behave with a dead SSD ? Date: 30 Nov 2016 07:19:14 GMT Lines: 45 Message-ID: References: <583b3a29$0$1567$c3e8da3$12bcf670@news.astraweb.com> <583b85ff$0$10986$c3e8da3$f017e9df@news.astraweb.com> <583bd7a6$0$1557$c3e8da3$12bcf670@news.astraweb.com> <291120161456080223%JimSGibson@gmail.com> <291120161828475976%nospam@nospam.invalid> <583e6990$0$51650$c3e8da3$f6268168@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net BvPNi8hEHY+O3yNQy6N9xQLJp4hESaKZWe5qb8o4JsvruPMEGm Cancel-Lock: sha1:E6ExdJS3b/b/0HnXHGIG91wV8tY= sha1:uxpKKEsYWB1MbKKP3w2dITQ8QeU= User-Agent: NewsTap/5.2.1 (iPhone/iPod Touch) Xref: csiph.com comp.sys.mac.system:97458 JF Mezei wrote: > On 2016-11-29 22:20, Jolly Roger wrote: > >> Time Machine to back up to two different destinations, whenever the SSD >> does crap out, replacing it will be a simple matter of replace, then >> restore. It's completely a non-issue. > > You're assuming that you will notice it crapping out. Unlike spinning > rust discs, an SSD will continue to remain readable after writes become > a problem. Irrelevant; as soon as there is an issue that prevents either reads *or* writes, the OS will say so. > But you may encounter a situation where after saving a document, the > middle 4 blocks contain invalid data because the SSD was unable to write > those 4 blocks and nobody noticed. Now you're trying to claim macOS doesn't verify data that it writes to a volume during file saves? That's not just completely false; it's laughable! > you cannot state that you're perfectly safe The fuck I can't. I have multiple automated backup sets stored on- and off-site, ensuring I'll lose no more than an hour of data at any time due to a hardware failure. > This isn't FUD Yes it is. > If you don't even know that an SSD will report unwriteable cells in > SMART data, how can you be sure that your current SSD hasn't begun to > degrade and lose cells ? Because my SSD shows zero signs of malfunction after eight years of continuous use doing hefty work - not a single I/O error or failed read or write in all that time. Your fear, uncertainty, and doubt are completely unwarranted, as usual. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR