SSD Write Endurance 25nm Vs 34nm

[Vapor]

Here are the options in Anvils app. I could run at 100% incompressible for an equal time that I ran the 0 fill - I would then be at ~50%. I could then go to the 46% or I could just carry on with 100% incompressible?

I'm inclined to keep at 100% incompressible but if there is a consensus otherwise I can do whatever.

Depends on what question you're most interested in answering. If NAND durability is the question, 100% incompressible. If SSD durability is the question, definitely not 100% incompressible or 0-fill data. None of us know what the 'world average' is for data compressibility, but I bet we can all agree not at (or near) either extreme

With WinRAR, I took my C: and D: drives and looked at what kind of compressibility they have.

C: drive (Windows + applications) was able to be compressed to 55.2% of the original size with the fastest compression algorithm.

D: drive (documents + photos) was able to be compressed to 79.4% of the original size with the fastest compression algorithm.

Real world data is somewhat compressible with even lightweight algorithms.

So, yeah, if you're interested in seeing when the NAND dies out, do 100% incompressible and take the controller's dedup/compression out of it (although parity schemes will still be a factor). If you're interested in seeing how the controller can mitigate some NAND wear (relative to the X25-V which has the same NAND [right?] but different controller), test with the 46% (seems to be the least compressible, but still compressible, option).

I do agree that 100% incompressible with the SF controller is something that should be tested, but picking between 100% incompressible and somewhat-compressible data, I'd have to pick somewhat-compressible to be tested first.