I double-checked the numbers reported by the driver against doing actual writes to the file system and the numbers reported by the OS, and they match exactly when there is no other activity: writing a 1GB file increases the number by 1GB and a few kilobytes of metadata.
Once the memory is full, it starts swapping a lot and then things go bad.
For the record, here are the numbers from this box: 900GB written in 20 power-on hours, on a 256GB driver.
Critical Warning: 0x00
Temperature: 26 Celsius
Available Spare: 100%
Available Spare Threshold: 99%
Percentage Used: 0%
Data Units Read: 15,019,377 [7.68 TB]
Data Units Written: 1,759,297 [900 GB]
Host Read Commands: 101,021,092
Host Write Commands: 14,010,727
Controller Busy Time: 0
Power Cycles: 75
Power On Hours: 20
Once the memory is full, it starts swapping a lot and then things go bad.
For the record, here are the numbers from this box: 900GB written in 20 power-on hours, on a 256GB driver.
Critical Warning: 0x00 Temperature: 26 Celsius Available Spare: 100% Available Spare Threshold: 99% Percentage Used: 0% Data Units Read: 15,019,377 [7.68 TB] Data Units Written: 1,759,297 [900 GB] Host Read Commands: 101,021,092 Host Write Commands: 14,010,727 Controller Busy Time: 0 Power Cycles: 75 Power On Hours: 20