Originally Posted by DawnSun
How many hours will a 3TB hard drive record?
So . . . will my 3TB Seagate external hard drive record "up to" 480 hours of HD? Or close to that? What variables determine how close?
As Joe said, the bitrate of the station you're recording determines the space required for each file. You can often determine how much that will be by how many subchannels the station has. Here's my usual breakdown:
1080i with no subchannels: 8 GB / hr
1080i with subchannels: 6 GB / hr
720p with subchannels: 4 GB / hr
480i subchannel: 2 GB / hr
The numbers depend upon the stations in your market, of course. Some 720p channels can be 6 GB / hr or higher.
If we assume 5 GB / hr (factoring in some recordings from 8 GB / hr and some from 2 GB / hr stations), a 3 TB HDD would give you 3 000 GB / 5 GB / hr = 600 hours of recording time. If you recorded only SD programs, you could perhaps fit 1 500 hours (3 000 GB / 2 GB / hr).
On the other hand, if you recorded only maxed-out 1080i stations, you'd have only 375 hours of recording time (3 000 / 8 GB / hr).
Note that these figures ignore space lost due to formatting the drive (space consumed by the ext2 filesystem itself) and any other system files the DVR+ might create.
Originally Posted by pachinko
I don't know, that's why I asked. Perhaps the USB drive gets tied to the DVR+ Serial Number for some crazy copy protection nonsense? I don't know.
There is no such known restriction. It should work just fine.