Xbox One DVR requires an external hard drive

The new DVR functionality for Xbox One comes with a major caveat – it will only work with consoles fitted out with an external hard drive.
The TV recording, pausing and streaming functionality was announced during the Xbox Gamescom 2015 press conference, but no mention was made of the additional requirements.
It has also subsequently been confirmed that the DVR tech is only compatible with over-the-air broadcasts (accessed via the console’s tuner accessory) and cannot be used in conjunction with cable or satellite TV, despite Xbox One’s in-built compatibility with such TV tech.
"You need an external hard-drive specifically for DVR because we want to keep the [storage] paths optimised between playing games and watching TV," project lead Richard Irving told GameSpot. "We don't want them to interact with each other."
Users will be able to stream any content they have recorded to compatible Windows 10 devices. Microsoft added that a “theoretical” resolution of 1080i should be supported.
The platform holder has also this week revealed a branded Seagate 2TB external hard drive for Xbox One and Xbox 360.

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