Adding a SCSI controller and SCSI Tape drive

[Nigel Wade]

Tim wrote:
> On Thu, 2006-11-16 at 14:36 +0000, Nigel Wade wrote:
>> Check your SCSI cabling and termination. If you have term power
>> enabled on the device try disabling it and using an external, active,
>> terminator. How long is the SCSI cable? 
> 
> I would have thought you'd want to *enable* termination power if you
> were going to use an external active terminator.  Where else is it going
> to get power from?

Normally from the controller, surely? You would only enable term. power if the 
controller doesn't supply it, and then only on one device, at the end of the chain.

> 
> Unless, you mean to ensure that you don't have several devices on the
> bus trying to supply termination power.
> 

That's the principle reason. IIRC, on some old devices turning on internal term. 
power also enabled internal termination, so you wouldn't want an external 
terminator in that case.

-- 
Nigel Wade, System Administrator, Space Plasma Physics Group,
             University of Leicester, Leicester, LE1 7RH, UK
E-mail :    nmw at ion.le.ac.uk
Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555