System Event Log (Sel); System Fan Management; Thermal And Acoustic Management - Intel S2600CO series User Manual

Platform Management Functional Overview
6.8

System Event Log (SEL)

The BMC implements the system event log as specified in the Intelligent Platform Management
Interface Specification, Version 2.0. The SEL is accessible regardless of the system power state
through the BMC's in-band and out-of-band interfaces.
The BMC allocates 65,502 bytes (approximately 64 KB) of non-volatile storage space to store
system events. The SEL timestamps may not be in order. Up to 3,639 SEL records can be
stored at a time. Any command that results in an overflow of the SEL beyond the allocated
space is rejected with an "Out of Space" IPMI completion code (C4h).
Events logged to the SEL can be viewed using Intel
and Active System Console.
6.9

System Fan Management

The BMC controls and monitors the system fans. Each fan is associated with a fan speed
sensor that detects fan failure and may also be associated with a fan presence sensor for hot-
swap support. For redundant fan configurations, the fan failure and presence status determines
the fan redundancy sensor state.
The system fans are divided into fan domains, each of which has a separate fan speed control
signal and a separate configurable fan control policy. A fan domain can have a set of
temperature and fan sensors associated with it. These are used to determine the current fan
domain state.
A fan domain has three states: sleep, nominal, and boost. The sleep and boost states have
fixed (but configurable through OEM SDRs) fan speeds associated with them. The nominal
state has a variable speed determined by the fan domain policy. An OEM SDR record is used to
configure the fan domain policy.
System fan speeds are controlled through pulse width modulation (PWM) signals, which are
driven separately for each domain by integrated PWM hardware. Fan speed is changed by
adjusting the duty cycle, which is the percentage of the time the signal is driven high in each
pulse.
6.9.1

Thermal and Acoustic Management

®
The Intel Server Board S2600CO offers multiple thermal and acoustic management features to
maintain comprehensive thermal protection as well as intelligent fan speed control. The features
can be adjusted in BIOS interface with path BIOS>Advanced>System Acoustic and
Performance Configuration.
6.9.1.1 Set Throttling Mode
Select the most appropriate memory thermal throttling mechanism for memory sub-system from
[Auto], [DCLTT], [SCLTT] and [SOLTT].
[Auto] – BIOS automatically detect and identify the appropriate thermal throttling mechanism
based on DIMM type, airflow input, DIMM sensor availability.
[DCLTT] – Dynamic Closed Loop Thermal Throttling: for the SOD DIMM with system airflow
input
58
®
's SELVIEW utility, Embedded Web Server,
Intel order number G42278-004
Intel® Server Board S2600CO Family TPS
Revision 1.4