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SSDs are useless for offline storage: if they aren't powered on and accessed often enough, the data just disappears. They're totally unsuitable for archiving.
by midoridensha 3y ago
SSDs are useless for offline storage: if they aren't powered on and accessed often enough, the data just disappears. They're totally unsuitable for archiving.
- 112233 3y agoOn a tangent: are there any data about nand data retention in low temperatures? Such as putting microsd in a freezer at -15°C ?
- abvaw 3y agoWhaaa? How much time? Does this also apply to SD cards and such?
- midoridensha 3y agoHere's a link I found with a quick google search: https://www.minitool.com/partition-disk/what-happens-to-data-on-ssd-when-power-is-lost.html https://www.minitool.com/partition-disk/what-happens-to-data... According to this, JEDEC Solid State Technology Association's standard is that SSDs should be able to retain data for 1 year at 30C. Not great for an archival medium. Here's a Quora discussion about it: https://www.quora.com/How-long-can-SSD-store-data-without-power-Can-data-be-recovered-from-SSD https://www.quora.com/How-long-can-SSD-store-data-without-po... Vendors will claim much better numbers than this, but the standard isn't very good.
- ridgered4 3y agoIt is also not at all clear what is needed to "top up" an offline SSD to assure the data is maintained. Some people say that merely connecting the drive to power for a few minutes to hours lets it restore the fading bits but others think nothing but a full rewrite of the data will. I haven't seen any official information or testing on this either so the conservative rewrite assumption seems the most reasonable.