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Removing a Blade Server Cover
S e n d d o c u m e n t c o m m e n t s t o u c s - d o c f e e d b a c k @ c i s c o . c o m
Internal Components
Figure 8
Figure 8
1
3
5
Diagnostics Button and LEDs
At blade start-up, POST diagnostics test the CPUs, DIMMs, HDDs and adapter cards, and any failure
notifications are sent to UCS Manager. You can view these notifications in the System Error Log or in
the output of the show tech-support command. If errors are found, an amber diagnostic LED will also
light up next to the failed component. During run time, the blade BIOS, component drivers, and OS all
monitor for hardware faults and will light up the amber diagnostic LED for a component if an
uncorrectable error or correctable errors (such as a host ECC error) over the allowed threshold occur.
LED states are saved, and if you remove the blade from the chassis the LED values will persist for up to
10 minutes. Pressing the LED diagnostics button on the motherboard will cause the LEDs that currently
show a component fault to light for up to 30 seconds for easier component identification. LED fault
values are reset when the blade is reinserted into the chassis and booted, and the process begins from its
start.
If DIMM insertion errors are detected, they may cause the blade discovery to fail and errors will be
reported in the server POST information, viewable using the UCS Manager GUI or CLI. UCS blade
servers require specific rules to be followed when populating DIMMs in a blade server, and the rules
depend on the blade server model. Refer to the documentation for a specific blade server for those rules.
HDD status LEDs are on the front face of the HDD. Faults on the CPU, DIMMs, or adapter cards will
also cause the server health LED to light solid Amber for minor error conditions or blinking Amber for
critical error conditions.
Cisco UCS B200 Blade Server Installation and Service Note
16
calls out the various components within the blade server.
Inside View of a Blade Server
1
2
Hard drive bays
Diagnostic button
DIMM slots
3
4
5
5
2
Battery
4
CPU and heat sink
6
Adapter card
4
6
OL-22473-02
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