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Sony is killing off recordable Blu-ray, bidding farewell to disc burning | TechSpot
(www.techspot.com)
This is a most excellent place for technology news and articles.
Ironically Japan is just now phasing out floppies, so there'll still be a market for a while.
A NAS is mostly geared for online media storage, whereas disks are for offline.
That's just the government though, similar to how a lot of the systems in the US still run on COBOL (including the IRS).