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Appendix C. Diagnostics and troubleshooting
For information about troubleshooting the entire fabric, refer to the Fabric OS
Troubleshooting and Diagnostics Guide.
The SAN384B includes a number of diagnostic tools to assist with troubleshooting,
including LEDs on the hardware, commands that display current status, diagnostic
tests for hardware and software, and error messages. In addition, a number of
managing and monitoring features are available, such as Fabric Manager, Web
Tools, Fabric Watch, and Advanced Performance Monitoring.
If the SAN384B does not operate as expected, the following steps can be taken to
diagnose the problem:
v Check the LEDs and refer to the LED tables (see Chapter 4, “Monitoring system
components,” on page 45) for interpretation and recommended actions.
v Review the results of the last POST run by the SAN384B (see “Interpreting POST
and boot results” on page 132).
v Review the error logs (refer to the Fabric OS Messages Reference and the Fabric OS
Administrator's Guide for more information).
v Enter the sensorShow command to determine the status of the hardware
components.
v Run diagnostic tests (see “Diagnostics” on page 133).
v Reboot the SAN384B or power the entire chassis off (“Powering off the
SAN384B” on page 44 and then back on (“Providing power to the SAN384B” on
page 35).
If the problem is still unresolved after these steps, contact technical support. The
information required by technical support in order to provide assistance is listed
under “Getting help” on page iii
This appendix provides the following information:
v “Obtaining chassis and component status”
v “Interpreting POST and boot results” on page 132
v “Diagnostics” on page 133
v “Troubleshooting” on page 133
Obtaining chassis and component status
The CLI commands listed in Table 27 on page 132 provide status and
environmental information about the chassis and its components. These commands
provide information only, and they do not interrupt traffic flow. For more
information about these commands, refer to the Fabric OS Command Reference.
© Copyright IBM Corp. 2009, 2010 131