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by DanielDent 2716 days ago
As I understand, SSD would be an especially poor choice for this - an SSD left unpowered for an extended period will begin to experience data durability issues. The firmware of a powered SSD will mitigate this issue by engaging in periodic refresh activity.

This is a classic use case for tape. LTO drives support reading up to 2 generations earlier, i.e. an LTO-7 drive can read an LTO-6 tape. By not using the latest standard, you should be able to find cheaper drives, but the risk becomes always being able to find a (working) tape drive that is capable of reading your specific tape.

All of a sudden spinning rust drives start to look pretty good...
1 comments
sunseb 2716 days ago
What about a Industrial SLC SD Card ? Like that:

https://swissbit.com/products/nand-flash-products/cards/sd-m...

Is it safe for backup or same problem?

link
DanielDent 2716 days ago
My understanding is that SLC is seen as safer, and lower densities are also seen as safer. Beyond that I don't know for sure.

I imagine that even an "industrial" grade flash card is still engineered with the assumption that it will be turned on for a while every now and then.

link