I just noticed Shadow Volume Copy is set to Manual under Services.msc as startup type, god knows how much time passed since its last run, however Automatic Maintanence works in fact it just worked today. I also noticed my samsung ssd (250GB) remaining %87 shows in HWinfo64 as "remaning drive life" at bottom. Samsung Magician shows AHCI and TRIM enabled so its good, however that windows service worried me because I did read somewhere that service needed to do Windows automatic defrag/optimize itself at background but then again I turned off "Optimize Drives" service from Services.msc long time ago. Is these related to each other? Should I do Optimize in Samsung Magician software?