NVMe SMART Log

To obtain the Quadra device NVMe SMART log, use the following command:

sudo nvme smart-log /dev/nvme0

Here is an example of the output:

Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning                    : 0
temperature                         : 38 C
available_spare                     : 100%
available_spare_threshold           : 20%
percentage_used                     : 0%
data_units_read                     : 0
data_units_written                  : 0
host_read_commands                  : 0
host_write_commands                 : 0
controller_busy_time                : 0
power_cycles                        : 0
power_on_hours                      : 0
unsafe_shutdowns                    : 0
media_errors                        : 0
num_err_log_entries                 : 0
Warning Temperature Time            : 0
Critical Composite Temperature Time : 0
Temperature Sensor 1                : 38 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

Below is an explanation of the sensors:

Temperature Sensor 1	represents the board temperature.
Temperature Sensor 2	represents the on die temperature.
temperature	represents the composite temperature.

When determining throttling behavior, the composite temperature is used.