Hard Disk Monitoring

I have been checking my hard disk activity for a few weeks now, and testmode.txt is ALWAYS using the most bytes total. 20/10/2015 17:24:45.017 Smart Detect 0 20/10/2015 17:24:45.210 Smart OK, Valid 20/10/2015 17:24:45.238 Detect start 3 20/10/2015 17:24:45.263 CV 20/10/2015 17:24:45.289 Detect start...