for exemple when i started using CTrec my internal disk life was like 56 % and after like 2 months using the CTrec my disk life was on 44% .. and i used to record like 7 or 8 cams at the same time nothing more and then i tried only 1 and happens the same shit .. recording 1 or 7 , 8 at the same time its the same shit it will destroy your disk lol sorry my english im trying my best lol xD