A new video from PlayStation UK has offered up an explanation of some of the PS5 tech, including a mention of the console's famous SSD and its 5.5 GB/s typical raw read bandwidth. However, thanks to assistance from Oodle Kraken and Oodle Texture, I/O bandwidth could actually reach 17.38 GB/s and even Mark Cerny's 22 GB/s claim.
https://www.notebookcheck.net/PlayStation-5-I-O-unit-gets-seriously-souped-up-to-a-potential-17-38-GB-s-bandwidth-thanks-to-potent-combination-of-Oodle-Kraken-and-Oodle-Texture.496015.0.html