Datasheet

Intel® Server Board S2600CW Family TPS Intel® Server Board S2600CW Platform Management
Revision1.11
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 On-board Ethernet controller temperature sensors (support for this is specific to the
Ethernet controller being used)
 Add-in Intel
®
SAS/IO module temperature sensor(s) (if present)
 Power supply thermal sensors (only available on PMBus*-compliant power supplies)
A simple model is shown in the following figure which gives a high level graphic of the fan
speed control structure creating the resulting fan speeds.
Figure 18. High-level Fan Speed Control Process
5.3.14.6.1 Processor Thermal Management
Processor thermal management utilizes clamp algorithms for which the Processor DTS-Spec
margin sensor is a controlling input. This replaces the use of the (legacy) raw DTS sensor
reading that was utilized on previous generation platforms. The legacy DTS sensor is retained
only for monitoring purposes and is not used as an input to the fan speed control.
5.3.14.6.2 Memory Thermal Management
The system memory is the most complex subsystem to thermally manage as it requires
substantial interactions between the BMC, BIOS, and the embedded memory controller HW.
This section provides an overview of this management capability from a BMC perspective.
5.3.14.6.2.1 Memory Thermal Throttling
The system shall support thermal management through open loop throttling (OLTT) and
closed loop throttling (CLTT) of system memory based on the platform as well as availability
of valid temperature sensors on the installed memory DIMMs. Throttling levels are changed
dynamically to cap throttling based on memory and system thermal conditions as determined
by the system and DIMM power and thermal parameters. Support for CLTT on mixed-mode
DIMM populations (that is, some installed DIMMs have valid temp sensors and some do not) is
not supported. The BMC fan speed control functionality is related to the memory throttling
mechanism used.