Discussion:
SSD Data Retention
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Roy
2015-05-15 14:27:58 UTC
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Some time ago, we were discussing data retention on different types of
drives. Here is a new article on SSD data retention

http://www.pcworld.com/article/2921590/death-and-the-unplugged-ssd-how-much-you-really-need-to-worry-about-ssd-reliability.html
David Kaye
2015-05-16 06:03:49 UTC
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Post by Roy
Some time ago, we were discussing data retention on different types of
drives. Here is a new article on SSD data retention
http://www.pcworld.com/article/2921590/death-and-the-unplugged-ssd-how-much-you-really-need-to-worry-about-ssd-reliability.html
Bummer! I had thought that there was some kind of chemical change going on,
which is why SSDs supposedly have a limited number of rewrites. But to know
that they'll break down after a year or two...jeez, I have 5 1/4 inch
floppies that have lasted longer than that.

Whoever invents the "perfect" storage medium (writing on glass?) will have
archivists around the world lined up.




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Kevin McMurtrie
2015-05-16 06:36:43 UTC
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Post by David Kaye
Post by Roy
Some time ago, we were discussing data retention on different types of
drives. Here is a new article on SSD data retention
http://www.pcworld.com/article/2921590/death-and-the-unplugged-ssd-how-much-
you-really-need-to-worry-about-ssd-reliability.html
Bummer! I had thought that there was some kind of chemical change going on,
which is why SSDs supposedly have a limited number of rewrites. But to know
that they'll break down after a year or two...jeez, I have 5 1/4 inch
floppies that have lasted longer than that.
Whoever invents the "perfect" storage medium (writing on glass?) will have
archivists around the world lined up.
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It really depends on bits per cell and the level of error correction.
Flash storage is analog and it degrades in an analog manner too. Older
flash storing one bit per cell into very large cells could take many
years to degrade, and that's at least as good hard drives. (Hard drives
fade when not running too)
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