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Need help understanding program\erase cycles vs total bytes written (SSD 525 64GB)

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I read that the 525 SSD is rate at 5000 p/e.

 

Is the total bytes available before failure equal to the size of the SSD x P\E? therefore, 64GB x 5000P/E = 320000 GB (312.5 TB)?

 

This contradicts the specs which claims that the "Minimum Useful Life/Endurance Rating" is 20 GB/Day for 5 years. So, 20GB x 365 x 5 = 36500 GB (36.5 TB)

 

312TB compared to 36.5 Tb is quite different. Can someone clarify the best method/calculation to understand how much data can be written to the card before failing? and how can the p/e be used to calculate the total bytes that can be written?

 

Thanks


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