I currently have a Roamio with a 3 TB hard drive installed internally. Thinking about upgrading to a Bolt. Is the hard drive upgrade the same? If so, I doubt I can just swap and still watch my recorded shows on the Bolt? If that doesn't work, I assume I can stream recorded shows from the Roamio to the Bolt? Also, what happens after the 1 year subscription ends? Does it required a yearly subscription or will monthly work too?