Intel Server System R1000BB Family

Intel
®
Server System R1000BB Product Family TPS
26 Revision 2.0
The Acoustic mode offers the best acoustic experience and appropriate cooling capability supporting the
majority of the add-in cards used. Performance mode is designed to provide sufficient cooling capability
covering all kinds of add-in cards on the market.
4.2.4 Fan PWM Offset
This option is reserved for manual adjustment to the minimum fan speed curves. The valid range is from [0 to
100] which stands for 0% to 100% PWM adding to the minimum fan speed. This feature is valid when Quiet
Fan Idle Mode is at Enabled state. The default setting is [0]
4.2.5 Quiet Fan Idle Mode
This feature can be [Enabled] or [Disabled]. If enabled, the fans will either shift to a lower speed or stop when
the aggregate sensor temperatures are satisfied, indicating the system is at ideal thermal/light loading
conditions. When the aggregate sensor temperatures are not satisfied, the fans will shift back to normal control
curves. If disabled, the fans will never shift into lower fan speeds or stop, regardless of whether the aggregate
sensor temperatures are satisfied or not. The default setting is [Disabled]
Note: The above feature may or may not be in effect and depends on the actual thermal characteristics of the
specified system.
4.2.6 Thermal Sensor Input for Fan Speed Control
The BMC uses various IPMI sensors as inputs to fan speed control. Some of the sensors are actual physical
sensors and some are “virtual” sensors derived from calculations.
The following IPMI thermal sensors are used as input to fan speed control:
• Front Panel Temperature Sensor
1
• CPU Margin Sensors
2,4,5
• DIMM Thermal Margin Sensors
2,4
• Exit Air Temperature Sensor
1, 7, 9
• PCH Temperature Sensor
3,5
• On-board Ethernet Controller Temperature Sensors
3, 5
• Add-In Intel SAS/IO Module Temperature Sensors
3, 5
• PSU Thermal Sensor
3, 8
• CPU VR Temperature Sensors
3, 6
• DIMM VR Temperature Sensors
3, 6
• BMC Temperature Sensor
3, 6
• Global Aggregate Thermal Margin Sensors
7
• Hot Swap Backplane Temperature Sensors
• I/O module Temperature Sensor (With option installed)
• Intel
®
ROC Module (With option installed)
Notes:
1. For fan speed control in Intel chassis
2. Temperature margin from throttling threshold
3. Absolute temperature
4. PECI value or margin value
5. On-die sensor
6. On-board sensor
7. Virtual sensor
8. Available only when PSU has PMBus
9. Calculated estimate