Check SSD Writen Amount Using Smartctl Feb 19th, 2021 • Permalink Check SSD writen amount using smartctlCopybrew install smartmontools sudo smartctl -a /dev/disk0 # Percentage Used: 6% # Data Units Read: 67,399,384 [34.5 TB] # Data Units Written: 53,574,524 [27.4 TB] So my 4 years MBP 2016 used 6% of the SSD life time.