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Next-gen optical disk can store over 14,000 4k movies
(www.digitaltrends.com)
This is a most excellent place for technology news and articles.
Yeah, for sure, I look for my larger files when I'm legally obtaining my movies.
I'd definitely have a place for them in my NAS, if they were much cheaper than HDDs. It'd be like an SSD cache to go with your HDDs, but a third slower tier for rarely accessed files.