To be honest, I just assumed the "Live" service was a subscription but it actually does appear to be one-time. I should note, however, that it seems the drive

To be honest, I just assumed the "Live" service was a subscription but it actually does appear to be one-time. I should note, however, that it seems the drive is built in and not easily user replaceable/swappable, so it's not really "however many terabytes you want".