Did these ever materialize? http://www.pcworld.com/article/2106260/sony-panasonic-develop-300gb-optical-discs-for-enterprise-storage.html http://www.pcworld.com

Did these ever materialize? http://www.pcworld.com/article/2106260/sony-panasonic-develop-300gb-optical-discs-for-enterprise-storage.html http://www.pcworld.com/article/2106260/sony-panasonic-develo... Edit: yes, looks like Verbatim (tbh the only company I'd trust to manufacture these aside from TDK or Sony) makes M-Disc in 25, 50, and 100GB: http://www.amazon.com/Verbatim-Disc-BDXL-Jewel-98912/dp/B011PZALWA?th=1&psc=1 http://www.amazon.com/Verbatim-Disc-BDXL-Jewel-98912/dp/B011... $70 for 25x25GB archival discs is pretty reasonable. Almost 9GB per dollar. The 100GB discs are ~5.8GB per dollar, but if taking up 1/4th the space and 1/4 the disc-swapping is worth it, those could be a good option ($425 for 25x100GB)