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M1 Mac SSD Wear Issue Tested and Explored [video]

18 pointsby lebed2045almost 4 years ago

5 comments

defaultnamealmost 4 years ago
18:26, with multiple ad breaks, lead in ads, etc. Reminds me of that Rene Ritchie video where he spends 10 minutes telling the &quot;truth&quot; about 8 vs 16GB, where the &quot;truth&quot; (according to him) could be condensed down to &quot;get more if you can afford it or need it&quot;.<p>Ain&#x27;t no one got time for that.
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dannywalmost 4 years ago
Large scale chia plotter here. I&#x27;ve used over 20 different brands of SSDs; you could say I &quot;stress-test&quot; NVMes for a living.<p>The &quot;TBW warrantied&quot; claims are not so meaningful. On every single NVMe, I have gotten at least 2-4x the rated TBW warrantied without encountering ANY issues, whatsoever.<p>The NVMe spec classifies the rating as being able to retain data, powered off, for 1 year. If your macbook is connected to power more than once in a year, you wouldn&#x27;t expect to lose data. So real ratings are higher than claimed in the video.<p>I&#x27;d expect the Mac&#x27;s NVMes to work for 4-8 years of heavy usage, before failure.
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wmfalmost 4 years ago
1. This video is old (April); Apple released a &quot;fix&quot; in macOS 11.4 in June. The author made a followup video showing that excessive writing still happens: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZnHgdqU-1ws" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=ZnHgdqU-1ws</a><p>2. This video guesses what NAND Apple is using instead of opening the case and looking. They also make assumptions about the endurance given that Apple doesn&#x27;t specify it.<p>3. Total speculation: Heavy swapping combined with 16 KB pages is very bad?
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wyxuanalmost 4 years ago
It&#x27;s a reporting issue according to this article and has been fixed in MacOS 11.4 <a href="https:&#x2F;&#x2F;appleinsider.com&#x2F;articles&#x2F;21&#x2F;06&#x2F;04&#x2F;apple-resolves-m1-mac-ssd-storage-longevity-issue-in-macos-114-beta" rel="nofollow">https:&#x2F;&#x2F;appleinsider.com&#x2F;articles&#x2F;21&#x2F;06&#x2F;04&#x2F;apple-resolves-m1...</a>
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daneel_walmost 4 years ago
The problem has only been reduced in macOS 11.4, but not solved. It&#x27;s still really bad.
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