Question : Problem: HP Smart array 6400 Controller - SCSI Bus Termination Error

I have a HP Proliant ML370 G4 server running Windows Server 2003 SP1.  I am trying to attach a Quantum ATL Superloader tape backup unit to the scsi ports on the back of the server.  When I try to boot after I connect the device, I receive error "1776 - Slot 1 - SCSI Bus Termination error - Internal and external drives cannot both be attached to the same scsi port.  Controller is disabled."  If I disconnect the Quantum unit, my server will boot as normal.  I've tried updating the firmware for the controller, and still get the same error.  

Answer : Problem: HP Smart array 6400 Controller - SCSI Bus Termination Error

If all you have in the system for a scsi controller is the scsi raid controller, i would suggest adding a scsi controller to the system like a 39160, i do not suggest at all to have a tbu attached to a raid controller, thats just asking for problems.