The 80pin 146GB U320 Drive and adapter I bought earlier don't seem to work drive powers up but is invisible no matter where I put it either internally or externally. the external enclosure I have has active termination on it. when I tried internally I used a pass-through terminator no matter the jumper settings TPWR on off or ID setting drive is not seen on the bus. If the drive is not terminated the drive light stays on but when terminated looks and sounds like its running right. SO I am guessing this drive doesn't have backward compatibly. So a friend was getting rid of his scsi stuff. All of it 68pin, he gave me a 68pin 4.5GB HDD, 4 device 68pin cable and a 50 female to 68 pin female adapter(he was using it to use a older 50 pin controller with 68 pin drives). I was asking if this adapter would work in the Q700 before I opened it up because its a pain to get the PSU out.
50 to 68-pin is usually okay. Ultra160 stuff usually has a better chance of working with 50 and 68-pin stuff.
also, don't turn termination power on for a U320 drive on an older bus-- it's not the required 5v but 3.3v. you'll blow the voltage reg and the drive if not caught in time.
PSU removal issues can be solved with a bit of grease in the right spots... but not too much. at least that's how I figured it out for my Q700.
makes me want to get the old beast going again; it's in storage right now and missing a few things.
also, are you using a utility that sees non-apple disks? Adaptec SCSIProbe may be one to look into to see if it can see it, also LaCIE Silverlining which is among the best options if it needs a driver.
