Researchers at the University of Shanghai for Science and Technology have developed an optical disc with a capacity of over a petabit of data, equivalent to well...
Due to the caddy nature I believe there were plans or limited availability of double-sided disks. That would have made it so much more appealing I think.
There is one on the Wikipedia page.
https://en.wikipedia.org/wiki/DVD-RAM
https://upload.wikimedia.org/wikipedia/commons/2/24/DVD-RAM_FUJIFILM_disc_removable_without_cartridge_locking_pin.jpg
Due to the caddy nature I believe there were plans or limited availability of double-sided disks. That would have made it so much more appealing I think.