Using NAS as a TV Program Recorder

There are some ways to use NAS, as for backup, as a media server(iTune, media streaming). Here is a NAS used as a recording device, where specific TV/STB could send programs to. It extends the typical way to record programs in TV/STB's internal disks.

I am curious about how do the programs transfer to disks. Is samba/cifs capable of delevering the traffic, especially when the the programs come to HD? Or if it uses some open protocols, like RTCP(Real Time Streaming Protocol)? Moreove it said the NAS could accept programs wrapped in DTCP(Digital Transmission Content Protection) DRM, which may slightly ease the content providers' nerve.

Reference:
IO Data unveils DiXiM HVL4-G2.0 NAS for Regza HDTVs

Toshiba's 10 new REGZA LCDs: 3x Ethernet, built-in DVR, and much much more

Digital Transmission Content Protection