Intel ISP4400 - Server Platform - 0 MB RAM, Product Manual

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44 SRKA4/ISP4400 Server System Product Guide
An LED above each cooling fan displays the status of that fan. The LEDs for two fans are noted
by "A" in Figure 20. The LED on the left indicates the status of the fan pointed to by the left
arrow. The LED on the right indicates the status of the fan pointed to by the right arrow.
A
OM09948
Figure 20. Fan LEDs Indicating a Fan’s Status
LED State Status
Solid amber There is a fault with the cooling fan or the cooling fan is not present.
Off The cooling fan is functioning properly.
Individual fans are hot-swappable. In other words, you can remove and install a fan without
shutting down the server. After a fan has been removed from the system, airflow patterns are
disrupted within the system. The Baseboard Management Controller (BMC) firmware on the
SKA4 baseboard polls the fans for status once every two minutes. Therefore, the BMC does NOT
detect the removal and installation of an individual fan 3 seconds and two minutes. To maintain
correct airflow patterns within the chassis and to ensure that all components remain within
specification under all system environmental conditions, it is recommended that fan hot-swap
operations do not exceed two minutes in duration.
CAUTION
The top cover must be on the system for proper cooling.