Tata will be launching Tata Sky HD PVR (personal video recorder) set top box soon. Tata Sky HD set-top box gives you High Definition TV. This digital broadcasting system has higher resolution and enhanced picture quality and sound quality in comparison to a regular television service.
This set top box will have a storage space of 500 GB and this will help us to record HD channels show and movies users may have missed due to his schedule. [source]