How many hours of programming can I record and store on my DVR?

DCX-3400: 200 hours of SD or 40 hours of HD
DCX-3510: 350 hours of SD or 90 hours of HD
DCT-6416/3416: 100 hours of SD or 20 hours of HD
DCT-6412: 75 hours of SD or 15 hours of HD
DCX-3520e: 350 hours of SD or 90 hours of HD
TDC777D: 175 hours of SD or 45 hours of HD

The number of recording hours depends on the hard drive capacity for your receiver model and the video format recorded: