Radxa M.2 E key to SATA breakout card

[dominik]

@murpf

I tested two 5-Port jmb585 controllers in m.2 format. I consistently get problems after a couple of hours, especially if I move around a lot of data or read a lot of data (test case is usually first moving a couple hundred gb from one drive to another and then scan a plex library). Timeouts, drives spinning down and spinning up, finally leading to readonly failing filesystems. I ruled out: cabling, drives, cooling of the jmb chip (still not sure, that’s a ridiculous small heatsink), and power supply.

Have You tried that with @semi extension or just on m.2 port?
JMB585 is same as the one from quad sata hat by radxa and also wired with pcie on rock4 or rock3a boards. Take a look at this thread for some other issue, both probably caused by same thing?