Just had a rather fiery argument with a couple of people on another site claiming that an archival copy is the exact same thing as a backup, but based on my research on the internet, it is not. From my understanding, an archival copy is closer to a copy of the original that isn't actively used, like a reference or a proof of purchase, and that a backup is more of an active copy that is used on a more regular basis. The argument came about regarding the scenario with Nintendo taking down Youtube channels that were doing TAS runs, that they were likely using emulators and ROMs. So the discussion jumped into ROM legality, with the people stating that you're allowed to not only make a backup of the game, but that you can use it as well. I referred to Title 17 Section 117 of the US Code (I know, not everyone here resides in the US) saying that only an archival copy can be made, and so went the argument between archival copy and backup, including various other things like Nintendo's legal terms that states that you cannot make or play unauthorized copies at all. So, are they the same, and what about the legality of ROMs that you dump yourself?