The immense 5-terabyte (TB) storage capacity of the "DBR-M190," Toshiba's new Blu-ray recorder, dedicates a huge 4TB of disk space to the "time-shift machine,"which can simultaneously record up to six terrestrial digital channels for 15 days, while still allowing 1TB to be used to record other programs. In addition to TVs, programs can be viewed on other digital platforms via REGZA Link Share.
The DBR-M190 will be available in mid December 2011 in Japan.
I think this is to make BD-R of HDTV programs and movies that do not have HDCP restrictions. Not to make copies of BD that are copy protected. ( although BluRay disk copying has been around for quite awhile. ) Sony has had one that is USB connected, BluRay self contained burner but it only does HD 2D, not 3D. It connects to Sony Digital camcorders. Uses file transfer, not streaming.