7 ms·
"eMMCs have a controller that handles the actual layout of the data" Maybe there is some part that eMMCs have that SD cards don't, but SD cards absolutely do h
by ajb 6y ago
"eMMCs have a controller that handles the actual layout of the data"
Maybe there is some part that eMMCs have that SD cards don't, but SD cards absolutely do have a controller that does layout (wear levelling). It doesn't do the filesystem layer, but IIRC eMMC's don't either.
AFAIK the only reason SDs are less reliable, is because they're cheap and the socket can be loose, causing corruption during a write (or wear level). It would be interesting if you know of something logically different that also makes them less reliable.
- rmu09 6y agoSD cards used to be optimized for usage patterns typical in a video or foto camera (big files, written at once). eMMCs are better adapted to serve as a traditional filesystems for e.g. phones. Don't find source now though, so maybe I'm completely wrong.
- hobby-coder-guy 6y agoFoto?
- ajb 6y agoThat's true, I remember reading that somewhere too.