[Info-vax] Processes hang on USB-access

[Joukj]

Hi all,

I have an 2 TB USB-disk attached to a DPWS500 running OpenVMS Alpha 
V8.4-2L1. After a couple of hours to couple of days the process 
reading/writing to the disk seems to hang on the disk access. When some 
other process tries to access this disk in this state, it also hangs. A 
normal reboot of the machine is not possible anymore since also the 
dismount of the disk hangs. I have to reset the machine.

No errors are logged for the device.

What could be the problem and how can I avoid processes hanging on 
access to this disk?

I already changed the USB-disk for a brand new one and I changed the 
machine to which it is connected. I think I also tried a XP1000.


         regards
            Jouk