Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

Running Offline Diagnostics

To run offline diagnostics, use the following commands.

1. Place the unit in the offline state.
   EXEC Privilege mode
   offline stack-unit stack-unit-number
   You cannot enter this command on a MASTER or Standby stack unit.
   NOTE The system reboots when the offline diagnostics complete. This is an automatic process. The following warning message appears when you implement the offline stack-unit command: Warning - Diagnostic execution will cause stack-unit to reboot after completion of diags. Proceed with Offline-Diags [confirm yes/no]:y
   After the system goes offline, you must reload or run the online stack-unit stack-unit-number command for the normal operation.
2. Confirm the offline status.
   EXEC Privilege mode
   show system brief
3. Start diagnostics on the unit.
   diag stack-unit stack-unit-number
   When the tests are complete, the system displays the following message and automatically reboots the unit.

   DellEMC#00:09:42 : Diagnostic test results are stored on file: flash:/TestReport-SU-0.txt
   Diags completed... Rebooting the system now!!!
   Mar 12 10:40:35: %S6000:0 %DIAGAGT-6-DA_DIAG_DONE: Diags finished on stack unit 1

   Diagnostic results are printed to a file in the flash using the filename format TestReport-SU-<stack-unit-id>.txt.
   Log messages differ somewhat when diagnostics are done on a standalone unit and on a stack member.
4. View the results of the diagnostic tests.
   EXEC Privilege mode
   show file flash://TestReport-SU-stack-unit-id.txt