We backed up Spotify (metadata and music files). It’s distributed in bulk torrents (~300TB). It’s the world’s first “preservation archive” for music which is fully open (meaning it can easily be mirrored by anyone with enough disk space), with 86 million music files, representing around 99.6% of listens.
Ill do that someday too. I dont like getting rid of media though since 1 glitch/hack/brownout could take out your entire nas very easily.