Post And Boot Specifications; Post; Boot; Power Supply Status Led Patterns, Status, And Recommended Actions - IBM SAN40B-4 - System Storage Switch User & Service Manual

Power supply status LED patterns
The power supply status LED patterns are shown in Table 8. These LEDs are
visible on the nonport side of the switch and are located to the left of the AC power
switches.

POST and boot specifications

The switch performs POST by default each time it is powered on or rebooted or the
system is reset. Boot time with POST is a minimum of three minutes. POST can be
skipped after subsequent reboots by entering the fastBoot command. For more
information about this command, refer to the Fabric OS Command Reference.

POST

The success or failure results of the diagnostic tests that run during POST can be
monitored through LED activity, the error log, or the command line interface.
POST includes the following steps:
1. Preliminary POST diagnostics are run.
2. Operating system is initialized.
3. Hardware is initialized.
4. Diagnostic tests are run on several functions, including circuitry, port

Boot

In addition to POST, boot includes the following steps after POST is complete:
1. Universal port configuration is performed.
Table 7. Ethernet LED patterns (continued)
LED name LED color
Ethernet link LED No light
(left)
Steady amber
Flashing amber/no
light
Table 8. Power supply status LED patterns, status, and recommended actions
LED name LED color
Power supply status No light
LED
Steady green
functionality, memory, statistics counters, and serialization.
Recommended
Status of hardware action
There is no link. Verify the Ethernet
cable is connected
correctly.
There is a link. No action is required.
There is link activity No action required.
(traffic).
Recommended
Status of hardware action
Primary power cord is Verify the power
disconnected or is supply is on and
not actively powered, seated and the power
or power supply has cord is connected to
failed. a functioning power
source.
Replace power
supply fan assembly,
if failed.
Power supply is No action is required.
operating normally.
Chapter 3. Operating the switch
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