Interpreting Post And Boot Results; Post; Environmental Status And Maintenance - IBM System Storage SAN384B-2 Installation, Service And User Manual

Interpreting POST and boot results

The SAN384B-2 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-2 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
v Verify that the switch prompt displays when POST completes.
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
POST includes the steps:
1. Preliminary POST diagnostics are run.
2. Operating system is initialized.
3. Hardware is initialized.
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SAN384B-2 Installation, Service, and User Guide
Table 26. Environmental status and maintenance commands
Command
sensorShow
tempShow
psShow
fanShow
chassisShow
slotShow
errShow, errDump
Chapter 4, "Monitoring system components," on page 51).
If one or more LEDs do not return to a normal state, and this is not due to the
SAN384B-2 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.
If it does not display, POST was not successfully completed. Contact IBM for
support.
accessible through the errShow command. For information about error
messages, refer to the Fabric OS Message Reference.
Information Displayed
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
Temperature readings for the port blades
Temperature readings for the CP blades
Status of all operational power supplies
Status and RPM of all operational fans
Serial number, time awake, and additional
information about each component
Slot occupancy
System error log. Refer to the Fabric OS
Message Reference for more information on
the messages in this log.