SCSI hardware question

Dan Coutu coutu at snowy-owl.com
Fri Feb 24 10:01:02 EST 2006


I'm a bit fuzzy on the specifics of different types of SCSI and in 
particular the compatibility and termination requirements when mixing 
devices.

I believe that I'm seeing intermittent problems due to hardware being 
configured wrong. I had someone setup a new system and it isn't behaving 
right so I'm trying to troubleshoot it.

Here's the setup:

RedHat 9 is the O/S

Using an Adaptec 29160 SCSI controller. This provides a variety of SCSI 
connection possibilities. The external connector is a 68 pin LVD. There 
are three internal connectors that provide the following: 68 pin LVD,
68 pin Ultra Wide, 50 pin Ultra SCSI.

Connected to the internal LVD connection is a Tandberg SLR60 which is 
specified as LVD/SE Wide Ultra2 SCSI by the manufacturer.

Connected the external LVD connection is an Iomega REV 1000 autoloader 
which is specified as LVD Ultra3 SCSI.

Terminators are in place on the tape drive and REV drive.

Are these devices, the tape, REC, and controller, compatible with each 
other as detailed above?

I'm not at all clear on the impact of the tape drive being single ended 
(SE), for example. The differences between Ultra2 and Ultra3 are also 
unclear.

Thanks for any insight that can be provided!

Dan



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