Kontron S5500 SEL Troubleshooting Manual de usuario descargar pdf (Pagina 40)

System Event Log Troubleshooting Guide for Intel

S5500/S3420 series Server Boards Cooling subsystem

Revision 1.0 Intel order number G74211-001 31

5. Cooling subsystem

5.1 Fan sensors

There are three types of fan sensors that can be present on Intel

server systems: speed, presence and redundancy. The last two are only

present in systems with hot-swap redundant fans.

5.1.1 Fan Speed Sensors

Fan speed sensors monitor the rpm signal on the relevant fan headers on the platform. Fan speed sensors are threshold-based sensors.

Usually they only have lower (critical) thresholds set, so that a SEL entry is only generated should the fan spin too slowly.

Table 27: Fan Speed Sensors Typical Characteristics

Byte

Field

Description

Sensor Type

04h = Fan

Sensor Number

30h – 39h (Chassis specific)

Event Direction and

Event Type

[7] Event direction

0b = Assertion Event

1b = Deassertion Event

[6:0] Event Type = 01h (Threshold)

Event Data 1

[7:6] – 01b = Trigger reading in Event Data 2

[5:4] – 01b = Trigger threshold in Event Data 3

[3:0] – Event Trigger Offset as described in Table 28

Event Data 2

Reading that triggered event

Event Data 3

Threshold value that triggered event

The following table describes the severity of each of the event triggers for both assertion and for deassertion.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 113 114

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Kontron S5500 SEL Troubleshooting Manual de usuario Pagina 40