> Are there regular flash chips here, or something more exotic? Something more exotic. It, at a minimum, has to be radiation hardened, which means it is not a

> Are there regular flash chips here, or something more exotic? Something more exotic. It, at a minimum, has to be radiation hardened, which means it is not a regular consumer or enterprise SSD. Also, wikipedia says development began in 1996 (https://en.wikipedia.org/wiki/Jwst https://en.wikipedia.org/wiki/Jwst) so also keep in mind that the "storage unit" was probably chosen sometime circa 2000-2004, which probably goes a long way to explaining the (by today's standards) somewhat slow write speed. The radiation hardening also likely has a play in the write speed because whatever changes are needed for rad. hardening have to go in, even if they have a detrimental impact on performance.