I examined the issue with the strange network service.
If found it out, with this little comand:
That the buggy service which is quit communication friendly is "ZigBee".
Quit stunning that my wlan card needs a permanet connection to an Chines server !
If you kill that service suddenly the permanent access to both HDDS stopps, kind of magic !
I googled it what zigbee actually can, in the data sheet they clam that it has build in remote maintenance future, but is it badly configured or what?