Being able to save huge amounts of data on a hard drive or even a back up drive system is excellent. It certainly beats the old days where we would pop in an old VHS tape and then it would loop over every week or so. If we were really creative, maybe we used a different tape for each day of the week. In this case, it took about 7 weeks to start looping over. I even know one business that used 31 tapes, one for each day of the month. I would much rather explore other options. Choose a wireless system, or even choose something with a combination of both. One option that I have also considered is the use of a generator as a backup, or even several generators as a backup. The only problem with this is that generators have small gas tanks, and it will not be much fun having to go outside every few hours to fill your machine with gas. That is also assuming that you would be able to find gas at affordable prices at that point. Another solution is to have a generator connected right into your home power system.