SPARC T4-1: Excessive fan noise (Doc ID 1585471.1)

Last updated on DECEMBER 07, 2016

Applies to:

SPARC T4-1
Information in this document applies to any platform.

Symptoms

Customer reports excessive noise coming from the server.

Server logs the following abnormalities on core temperatures and fan speeds despite the fact customer states the environment is cool and stable under 20C.

257 | 08/20/2013 | 16:58:04 | Temperature MB/C0/T_TCORE | Upper Non-critical going high | Reading 90 > Threshold 90 degrees C
258 | 08/20/2013 | 16:58:09 | Temperature MB/C0/T_TCORE | Upper Non-critical going low  | Reading 84 < Threshold 90 degrees C
259 | 08/20/2013 | 17:13:59 | Temperature MB/C0/T_TCORE | Upper Non-critical going high | Reading 90 > Threshold 90 degrees C
25a | 08/20/2013 | 17:14:04 | Temperature MB/C0/T_TCORE | Upper Non-critical going low  | Reading 84 < Threshold 90 degrees C

FB/FM0/F0/TACH   | 76h | ok  | 29.10 | 5300 RPM
FB/FM0/F1/TACH   | 77h | ok  | 29.11 | 4900 RPM
FB/FM1/F0/TACH   | 78h | ok  | 29.12 | 10700 RPM
FB/FM1/F1/TACH   | 79h | ok  | 29.13 | 9800 RPM
FB/FM2/F0/TACH   | 7Ah | ok  | 29.14 | 7000 RPM
FB/FM2/F1/TACH   | 7Bh | ok  | 29.15 | 6300 RPM
FB/FM3/F0/TACH   | 7Fh | ok  | 29.16 | 7000 RPM
FB/FM3/F1/TACH   | 80h | ok  | 29.17 | 6400 RPM
FB/FM4/F0/TACH   | 81h | ok  | 29.18 | 5400 RPM
FB/FM4/F1/TACH   | 82h | ok  | 29.19 | 4800 RPM
FB/FM5/F0/TACH   | 83h | ok  | 29.20 | 5300 RPM
FB/FM5/F1/TACH   | 84h | ok  | 29.21 | 4900 RPM

Cause

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