I don't know the official answers, but I would imagine the answer to all your questions would be based on the storage size of where the media will be held.
ie: local TCS HDD, or external NAS/SAN
One would have to calculate the size of the recording based on it's lenght and bit rate. Remember you'd have to take into account that for every 1 recording, you'll have at minimum 2 files that would require storage at your specifid location. 1 raw file that is used to output all the various file types from, plus whatever output types you choose (at least one).
