Hallo Simon,

> What does CTRLERR mean? A bad tk50 controller? VMS seems to see the
> tk50, it works as intended. Is anything wrong with copying
> on solaris? Byteorder?
> Any suggestions?
> 

Byte order should not be a problem since this is going out as a byte
stream.  The way you can absolutely know for sure if it is a bad controller
is to log into VMS and do the following.

	$ INIT MUA0: TESTME
	$ COPY {SOMEFILE} MUA0:
	$ DISM MUA0: /NOUNLOAD	
	$ MOUNT MUA0: TESTME
	$ DIR MUA0:
	$ DISM MUA0:

If all these steps follow correctly, then I would guess that it might
be an alignment problem between the tape drives.

Hope this helps


Andy SPorner
asporner@eagle.ibc.edu