Disc

In the 23rd century, discs look like obvious descendants of CD-Rom and DVD-Rom technology, a pretty accurate observation. Most readers, for computers, braincases, and droids, use 8-centimeter wide platters that are rougly 2 millimeters in thickness. As with the technology they developed from, they are available in both 'permanent', 'burnable', and read-writable versions.

The amount of data they can store is measured in the petabyte to exabyte range, and typically store something absurd like every notable song ever recorded, all videos in a genre, or the collective understanding and supporting data for a single subject matter.