[KLUG Members] My own SCSI question

Adam Williams members@kalamazoolinux.org
03 Jun 2003 06:01:39 -0400


> >>I have 5 2 g.b. Seagate SCSI 68 pin drives.  I have a differential 
> >>controller and the drives all spin up but the card doesn't detect them. 
> > Right, you can't use SE devices with a DIFy controller.
> Know where I could get a SE adapter (pref used)?

Best Buy? Comp USA? E-Bay?

Just about every SCSI adapter is SE, DIFy adapters are extremely rare.
 
> >>Well Seagate says these particular drives are only meant for single 
> >>ended SCSI bus.  Plus I don't think I have all the jumpers set right 
> >>either.  All of them except one are set to termpower while the last is 
> >>only set to termenabled.  I am just wondering if my configs are correct 
> >>at all so when I get my hands on a single-ended SCSI adapter I can get 
> >>them working.  Any info about this would be excellent.
> > Your setting sound correct.
> > 1. Every drive has a unique ID, with none set as 7
> > 2. Term power is enabled on at least one devices
> > 3. Termination is enabled on last device OR you have a terminator on the
> > end of the cable.
> Only have one jumper per drive so will it matter if I don't have term 
> power on one of the drives?  And does termpower have to be enabled on 
> the termenabled drive?
> They all have unique id's none them 7.

You only need termination power if you have an external active
termination.  However, having termination power enabled won't effect
anything negatively.