im a cctv engineer for tesco... yes you can record to memory cards etc, but it all comes down to how good your dvr (digital video recorder) is, personally i would never recommend any ebay shit specials as they can store fuk all footage and the picture quality is rubbish, but then i suppose its down to your budget, our dvrs we order are around £1k and thats without the cameras etc that that will store 28 days continuous footage, high res cameras etc....