Tvheadend

Hey guys,

I'm planning to my a NAS (nothing big, 1-2 bays) and run my Sundtek MediaTV Pro DVB-C Stick on it with Tvheadend. To be able to watch the HD channels that are encrypted by my provider (Kabel-Deutschland) I need the NAS to be powerful enough to descramble 1 HD channel (or better 2 at same time). Clients would be some XBMC devices.

My question is now: What hardware-specifications does my potential NAS need to this? Would the DS-212/DS-213 from Synology or the TS-119P II/TS-121 from QNAP be powerful enough for this kind of job?

Best regards,
Ralf