I have a large collection of DVD movies on optical discs. I recently transferred them to an external 8TB hard drive. If I were to watch these movies on my TV, I would copy the desired movies to a pen drive, and then plug that pen drive into my TV. The alternative would be to disconnect and reconnect the HDD, and then have it spinning for the full 1 or 2 hours that the movie runs. If the pen drive is of good quality, I expect that I should be able to rewrite it 1000 times before it starts to degrade.