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Re: Migrating system from u-sd to nvme memory on arm64's?




On 14/7/23 06:25, Stefan Monnier wrote:
It's not obvious how to translate that to "30%".
Jeremy?  Do you remember what data made it possible to get this 30% estimate?


Further to my previous reply, I ran this on my SBC lan server. I'm certain the power on hours is wrong as it's been 100% for 2-3 years. Not that is does much other than handle mail and act as a DNS secondary so 0% wear (100% available spare)


sudo nvme list
Node             SN Model                                    Namespace Usage                      Format           FW Rev ---------------- -------------------- ---------------------------------------- --------- -------------------------- ---------------- -------- /dev/nvme0n1     S4EUNJ0N451054H      Samsung SSD 970 EVO Plus 250GB           1          26.86  GB / 250.06  GB    512   B +  0 B   2B2QEXM7
root@sentinel:/var/s3# sudo nvme smart-log /dev/nvme0n1
Smart Log for NVME device:nvme0n1 namespace-id:ffffffff
critical_warning            : 0
temperature                : 40 C
available_spare                : 100%
available_spare_threshold        : 10%
percentage_used                : 0%
endurance group critical warning summary: 0
data_units_read                : 196,248
data_units_written            : 1,441,922
host_read_commands            : 2,719,492
host_write_commands            : 73,956,721
controller_busy_time            : 119
power_cycles                : 37
power_on_hours                : 373
unsafe_shutdowns            : 18
media_errors                : 0
num_err_log_entries            : 35
Warning Temperature Time        : 0
Critical Composite Temperature Time    : 0
Temperature Sensor 1           : 40 C
Temperature Sensor 2           : 41 C
Thermal Management T1 Trans Count    : 0
Thermal Management T2 Trans Count    : 0
Thermal Management T1 Total Time    : 0
Thermal Management T2 Total Time    : 0



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