Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!pasteur!ucbvax!hplabs!hpda!hpcupt1!hprnd!kc
From: kc@hprnd.HP.COM (Kurt Chan)
Newsgroups: comp.sys.hp
Subject: Re: Serious SCSI drive problems
Message-ID: <2630002@hprnd.HP.COM>
Date: 3 Jan 89 17:58:15 GMT
References: <6589@killer.DALLAS.TX.US>
Organization: HP Roseville Networks Division
Lines: 18

Could you describe the physical configuration for the SCSI portion of your
system?

  1. Is your system cabling less than 6 meters total?

  2. Is there a plug-on terminator on the last device in the chain?

  3. Are there any other SCSI devices on the bus that are powered down (or up)?

  4. Has your HP support person measured TERMPWR to determine if it is within
     spec (and that the fuse is not blown on the host adapter)?  It should be
     no less than 4.0V at SCSI pin 38 on the 370 bulkhead - the higher the
     better.  The tri-state drivers on the 370 *might* still work even without
     the proper termination or terminator power, but would cause link errors.

Kurt Chan
HP, Roseville Networks Division
916-785-5621