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Old 06-21-2023, 06:44 AM   #1
hortageno
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Any current 2TB NVME drives with 2-bit MLC available?


I'm planning to replace a 1TB Samsung SSD 860 PRO 1TB with a 2TB NVME drive. Now I see, that Samsung uses TLC flash memory (or "3-bit MLC" how they call it) for their current "Pro" models.

Are there any other true MLC drives available at the moment?
 
Old 06-26-2023, 12:42 AM   #2
mrpops2ko
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Not really, maybe you could get some enterprise ones but the price of those would be so high that its not worth considering and its hard to really even recommend them when theres been so many advances in current nvme tech.

Generally what I ask people is how many reputable nvme ssd's have they had die and after how much writing? because the answer to that for most people who buy the reliable ones is 0 and many many TB.

The TBW values stated by most manufacturers amount to nothing more than best guess bets, of which are very conservative in results. I know of a russian company which went to great lengths to try and categorise just how long some SSDs and nvme ssd's would last before actually dying. I will post an image of the results.

From that you can see some MLC ones pushing out very far ahead but please note that these are all 250gb ssd's. If you do some scaling math then it means something like a 4tb 860 evo (which did 3PB @ 250gb) could do some 48 petabytes of writes before kicking the bucket.

Whether that will be the case in reality is anyones guess, because you are limited by 500 MB/s interface. Just to determine if it was capable of that would take 3 years.
(48 petabytes) / (500 (MB / s)) = 3.04212141 years

but the major take away I try and get most people to ask is if they are sure they'll need MLC levels of writes when just going for larger capacity TLC drives in effect when you consider pricing is a far better strategy. I recently bought brand new 4x 4tb 860 evo's @ $130 each. That was far cheaper than anything else I could have acquired.
 
  


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