I have both "177 Wear_Leveling_Count" and "233 Media_Wearout_Indicator" on an old Samsung SATA II consumer SSD. On a newer one, there's only Wear_Leveling_Count

I have both "177 Wear_Leveling_Count" and "233 Media_Wearout_Indicator" on an old Samsung SATA II consumer SSD. On a newer one, there's only Wear_Leveling_Count, but there's also "241 Total_LBAs_Written", which gives an interesting metric: $ sudo smartctl -A /dev/sda | awk '/177/ {print $2,$4} /241/ {printf "%.3f\n", $10 * 512 / 1024^3}' Wear_Leveling_Count 097 4151.677 Just 4.1TiB written so far causes a 3% decrease in drive "endurance".