>from a practical standpoint life expectancy is roughly linear with size. For the flash itself (the giant mass of NAND or NOR gates making up the cells), in te

>from a practical standpoint life expectancy is roughly linear with size. For the flash itself (the giant mass of NAND or NOR gates making up the cells), in terms of TBW it's straight up linear with size. 2 TB flash storage has twice as many cells as a 1 TB (of the same make) therefore can eat twice as many write cycles (unless the manufacturer does something on the sly like change overprovision ratio based on capacity, change from TLC to QLC on higher capacity units and "forget" to mention it, etc., but those are factors beyond the basic logic gate arrays). However I don't think size effects MTBF as that looks at factors unrelated to write cycles; things like catastrophic failure of a chip or a short that catches fire and burns down the server farm. Realistically speaking, MTBF has little bearing when considering flash storage lifetime. TBW is where it's at. If the specs only give MTBF, I tend to assume the TBW is bad enough it's worth hiding and I'll avoid those . If not that, then it's either straight incompetence, recycled flash scam, or the manufacturer just doesn't give a shit (all of which are way worse than choosing to omit a low TBW rating). It may seem like i'm nitpicking the word 'roughly' but i don't disagree with the sentiment. Depending on how you want to measure lifetime (jfc don't use MTBF), it isn't exactly linear, but it's not the flash's fault.