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Cooling Overview

Fan speed is displayed in RPM. Error log is asserted when fan speed is below lower critical threshold.
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Figure 1. Cooling Overview
Cooling Overview
  • Status (two status):

    • Healthy condition:

    • Fault condition:

  • Fan_Tach_#A(B):

    • When the number(#) equals to 2, 3 or 4, system fan speed normally operates at 2000 - 18500rpm.

    • When the number(#) equals to 1 or 5, system fan speed normally operates at 2000 - 13000rpm.

    D2 Enclosure system fan is equipped with dual motor. Tach A displays the primary fan motor speed and tach B displays the redundant fan motor speed.

  • Lower Critical: 768 rpm is set to be the lower critical fan speed threshold.