[comp.periphs.scsi] Problems with a WD7000FASST and a 300meg Wren IV

woody@iear.arts.rpi.edu (Christopher Widmann) (12/16/90)

    I am having some troubles with my Wren and my WD7000 controller. At
intermitent times (can be at bootup, or while running an application.),
the Wren's drive light will come on very brightly, and stay on, and the
machine freezes up. Only during disk accesses does this problem occur,
and I noticed it also increases in periodicity when I increase the
length of the SCSI cable, or (I don't know why), add more memory to my
machine (from 4 to 8 megs). 

	I talked with a WD techie, and he suggested it might be a
Termination Power problem, and that I should switch the drive to use the
cable's power rather than the power provided to the drive directly. When
I change the TP jumper to that position, the drive refuses to spin up,
and I have event tried the TP jumper on the WD7000 end (near the 50 pin
plug) to no avail. Has anyone out there done this? Has anyone ever seen
this happen before and know how to solve it? Right now it is nothing
more than an annoyance, but now that I am switching to Unix, I cannot
have my machine crashing periodically at all in fear of data loss and
problems with Unix. 

						Chris Widmann
						woody@iear.arts.rpi.edu


Chris Widmann ---------------------------------------------------------------
 woody@iear.arts.rpi.edu - Rensselaer PolyTechniTortureTute 
"Life is like an ice cream cone, you lick it one day at a time"-Charlie Brown 
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