Not certain how well LOCKSS has done over time as Internet Archive seems to get all the press, but it seemed to be a solid concept with some level of implmentation:
Taking its name (Lots of Copies Keeps Stuff Safe) from the idea that a file is more likely to survive if it has multiple copies stored in multiple places, LOCKSS software allows libraries to create preserved digital collections out of materials that would otherwise be accessible only through a licensed academic subscription. LOCKSS has agreements with academic publishers to permit libraries to store local copies of content that is usually only accessible through web-based subscriptions, enabling post-cancellation content access.
https://coptr.digipres.org/index.php/LOCKSS_(Lots_of_Copies_...