Comment by justsomehnguy

Comment by justsomehnguy a day ago

Depends on the usage and the initial claimed DWPD.

I've seen Samsung 860 Pro (DWPD of 0.6) doing fine after years under LUKS (the worst case for SSD). As soon as you go for DWPD > 1 (real or effective) the wearout is not a problem.

hangonhn a day ago

Why is LUKS bad fro SSDs? I'm thinking of using LUKS for my USB thumb drive.

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spydum a day ago

it's not. I think there were some corner cases where the storage controller or SSD may use compression, in which.. the random nature of LUKS would cause more writes, but I'm not sure thats a real concern.

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justsomehnguy a day ago

LUKS as any other encryption encrypts the whole device, which means your whole drive is filled with a white noise and you lose TRIM.
It would be fine for the occassional write operations but if you use it for the system drive you are effectively run with the write amplification 24/7 (for a server and my example up there was for the server, not for a notebook which would have only 8-12 hours of operation a day at most).
So it boils down for the usage pattern.

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