Especially since the Internet Archive - which is in San Francisco - has no full backup anywhere else.
https://blog.archive.org/2013/11/06/scanning-center-fire-ple...
"We lost maybe 20 boxes of books and film, some irreplaceable"
The fire happened in a scanning center, and the irreplaceable items were things they were right about to scan. Definitely unfortunate, but you can't digitally back up physical media that you haven't scanned yet, anyway.
Also, that was eleven years ago, which I would say is more than "a few" (I know, time's moving too quickly these days).