Thermal Management Overview; Set Throttling Mode; Altitude - Intel R1000GZ Technical Product Specification

• In single power supply configurations, the 2
installed at all times.
• The system top-cover must be installed at all times.
4.2

Thermal Management Overview

In order to maintain the necessary airflow within the system, all of the previously listed components and top
cover need to be properly installed. For best system performance, the external ambient temperature should
remain below 35ºC and all system fans should be operational. The system is designed for fan redundancy
when the system is configured with two power supplies. Should a single system fan fail (System fan or Power
Supply Fan), integrated platform management will: change the state of the System Status LED to flashing
Green, report an error to the system event log, and automatically adjust fan speeds as needed to maintain
system temperatures below maximum thermal limits.
Note: All system fans are controlled independent of each other. The fan control system may adjust fan speeds
for different fans based on increasing/decreasing temperatures in different thermal zones within the chassis.
In the event that system thermals should continue to increase with the system fans operating at their maximum
speed, platform management may begin to throttle bandwidth of either the memory subsystem or the
processors or both, in order to keep components from overheating and keep the system operational. Throttling
of these sub-systems will continue until system thermals are reduced below preprogrammed limits.
Should system temperatures increase to a point beyond the maximum thermal limits, the system will shut
down, the System Status LED will change to a solid Amber state, and the event will be logged to the system
event log.
Note: Sensor data records (SDRs) for any given system configuration must be loaded by the system integrator
for proper thermal management of the system. SDRs are loaded using the FRUSDR utility.
An intelligent Fan Speed Control (FSC) and thermal management technology (mechanism) is used to maintain
comprehensive thermal protection, deliver the best system acoustics, and fan power efficiency. Options in
<F2> BIOS Setup (BIOS>Advanced>System Acoustic and Performance Configuration) allow for
parameter adjustments based on the actual system configuration and usage. Refer to the following sections for
a description of each setting.
4.2.1

Set Throttling Mode

This option is used to select the desired memory thermal throttling mechanism. Available settings include:
[Auto], [DCLTT], [SCLTT] and [SOLTT].
[Auto] – Factory Default Setting - BIOS automatically detects and identifies the appropriate thermal throttling
mechanism based on DIMM type, airflow input, and DIMM sensor availability.
[DCLTT] – Dynamic Closed Loop Thermal Throttling: for the SOD DIMM with system airflow input
[SCLTT] – Static Close Loop Thermal Throttling: for the SOD DIMM without system airflow input
[SOLTT] – Static Open Loop Thermal Throttling: for the DIMMs without sensor on dimm (SOD)
4.2.2

Altitude

This option is used to select the proper altitude that the system will be used in. Available settings include:
[300m or less], [301m-900m], [901m-1500m], [Above 1500m].
Selecting an altitude range that is lower than the actual altitude the system will be operating at, can cause the
fan control system to operate less efficiently, leading to higher system thermals and lower system performance.
If the altitude range selected is higher than the actual altitude the system will be operating at, the fan control
system may provide better cooling but with higher acoustics and higher fan power consumption. If the altitude
is not known, selecting a higher altitude is recommended in order to provide sufficient cooling.
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Intel Server System R1000GZ/GL Product Family TPS
nd
Revision 1.1
power supply bay must have the supplied filler blank