What is the difference between DirecTV HR21 and DirecTV HR22?

The HR21 and HR22 happen to be two different versions of hardware from DirecTV. The very first difference between them that would be mentioned here is the difference in the size of their hard drives. The size of the HR21 hard drive is 320GB, while that of the HR22 hard drive is 500GB. This is just the major significant difference between the two, as the HR22 space allows for more recordings, which will definitely be of added benefit to anyone that has access to its ownership.

The two devices are almost exactly the same as they both have HDMI, component, RCA, and composite video output with TOSLINK for audio. In addition, you can also match up the differences between the two devices by attaching an external memory to the HR21 match up with its counterpart. And die to that simple difference between them, you would find the DirecTV HR22 more expensive than the DirecTV HR21.