IBM SAN384B, Installation, Service And User Manual

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Table 27. Environmental status and maintenance commands
Command Information Displayed
sensorShow Temperature readings for the port blades
Temperature readings for the CP blades
Status and RPM of all operational fans
Status of all operational power supplies
tempShow Temperature readings for the port blades
Temperature readings for the CP blades
psShow Status of all operational power supplies
fanShow Status and RPM of all operational fans
chassisShow Serial number, time awake, and additional
information about each component
slotShow Slot occupancy
errShow , errDump System error log. Refer to the Fabric OS
Message Reference for more information on
the messages in this log.
Interpreting POST and boot results
The SAN384B performs power on self test (POST) by default each time the system
is powered on, rebooted, or reset. The system can be rebooted using the
reboot (to
reboot each CP individually), or fastBoot commands. The fastBoot command
reboots the SAN384B without running POST. If the active CP blade is rebooted, it
fails over to the standby CP blade.
POST
To verify that POST has completed without error:
v
Verify that all LEDs return to a normal state after POST completes (see
Chapter 4, “Monitoring system components,” on page 45).
If one or more LEDs do not return to a normal state, and this is not due to the
SAN384B being set to beacon, refer to the relevant LED table to identify and
correct the problem. For port blades, router blades, and CP blades, the
slotShow
command can be used to check the status of the slots. For information about
turning beaconing on/off, refer to the
Fabric OS Administrator's Guide .
v
Verify that the switch prompt displays when POST completes.
If it does not display, POST was not successfully completed. Contact IBM for
support.
v Review the system error log using the errShow or errDump commands.
v
Any errors detected during POST are written to the system log, which is
accessible through the
errShow command. For information about error
messages, refer to the Fabric OS Message Reference .
POST includes the following steps:
1. Preliminary POST diagnostics are run.
2. Operating system is initialized.
3. Hardware is initialized.
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SAN384B Installation, Service, and User Guide