Channel Troubleshooting Procedure


Channel Troubleshooting Procedure

This procedure should be used when there is a problem on the SCSI channel outboard of the adapter/controller that prevents the adapter/controller from communicating with the devices attached to that channel.

  1.  For non-hot-swap systems, check termination of identified channel.
  2.  Check for proper cabling configuration in systems that use DASD status cables.
  3.  To determine if a single drive is causing the failure, disconnect one  drive at a time and reboot the system each time.
     Continue until you have  disconnected all the drives, or the failure has disappeared.
  4.  Replace SCSI cable.
  5.  Replace SCSI backplane.


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