Cisco UCS B420 M4 Nota de instalação e manutenção - Página 20

Procurar online ou descarregar pdf Nota de instalação e manutenção para Servidor Cisco UCS B420 M4. Cisco UCS B420 M4 38 páginas. Blade server

Diagnostics Button and LEDs

Note

The heat sinks and CPUs are numbered as follows:

• Left front heat sink and CPU 1

• Right front heat sink and CPU 2

• Right rear heat sink and CPU 3

• Left rear heat sink and CPU 4

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 Cisco UCS Manager System

Error Log or in the output of the show tech-support command. If errors are found, an amber diagnostic LED

also lights up next to the failed component. During run time, the blade BIOS and component drivers monitor

for hardware faults and will light up the amber diagnostic LED as needed.

LED states are saved, and if you remove the blade from the chassis the LED values will persist for up to 10

minutes. Press and hold the diagnostics button on the motherboard for 30 seconds to display component faults.

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 process to fail and errors will be

reported in the server POST information, which is viewable using the UCS Manager GUI or CLI. DIMMs

must be populated according to specific rules. The rules depend on the blade server model. Refer to the

UCS B420 M4 Blade Server Specification Sheet

Faults on the DIMMs or adapter cards also cause the server health LED to light solid amber for minor error

conditions or blinking amber for critical error conditions.

All Cisco UCS blade servers use a CR2032 battery to preserve BIOS settings while the server is not installed

in a powered-on chassis. Cisco supports the industry standard CR2032 battery that is available at most

electronics stores.

Warning

There is danger of explosion if the battery is replaced incorrectly. Replace the battery only with the same or

equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's

instructions.

To install or replace the battery, follow these steps:

Procedure

Step 1

Remove the existing battery:

a) Power off the blade, remove it from the chassis, and remove the top cover.

Cisco UCS B420 M4 Blade Server Installation and Service Note

for the DIMM population rules.

Servicing the Blade Server

Cisco