Chenbro RM23712 User Manual

RM23712 TPS
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fan speeds for different fans based on increasing/decreasing temperatures in different thermal
zones within the chassis.
In the event that system temperatures 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 subsystems will continue until system temperatures are
reduced below preprogrammed limits.
The power supply will be protected against over temperature conditions caused by excessive
ambient temperature. In an over-temperature protection condition, the power supply module
will shut down.
4.2.1 Fan Speed Control
The baseboard management controller (BMC) supports monitoring and control of fan speed (RPM).
Each fan is associated with a fan speed sensor that detects fan failure.
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.
4.2.2 Programmable Fan PWM Offset
The system provides a BIOS Setup option to boost the system fan speed by a programmable
positive offset or a “Max” setting. Setting the programmable offset causes the BMC to add the offset
to the fan speeds to which it would otherwise be driving the fans. The Max setting causes the BMC
to replace the domain minimum speed with alternate domain minimums that also are programmable
through SDRs.
This capability is offered to provide system administrators the option to manually configure fan
speeds in instances where the fan speed optimized for a given platform may not be sufficient when
a high end add-in adapter is configured into the system. This enables easier usage of the fan speed
control to support Intel as well as third party chassis and better support of ambient temperatures
higher than 35°C.
4.2.3 Hot-Swap Fans
Hot-swap fans are supported. These fans can be removed and replaced while the system is
powered on and operating. The BMC implements fan presence sensors for each hot-swappable
fan.
When a fan is not present, the associated fan speed sensor is put into the reading/unavailable state,
and any associated fan domains are put into the boost state. The fans may already be boosted due
to a previous fan failure or fan removal.
When a removed fan is inserted, the associated fan speed sensor is rearmed. If there are no other
critical conditions causing a fan boost condition, the fan speed returns to the nominal state. Power
cycling or resetting the system re-arms the fan speed sensors and clears fan failure conditions. If
the failure condition is still present, the boost state returns once the sensor has re-initialized and the

Chenbro RM23712 Specifications

General

Brand	Chenbro
Model	RM23712
Category	Racks & Stands
Language	English

Summary

Product Overview

System Features Overview

General overview of system features and available options.

Server Board Features Overview

Key features and component locations on the server board.

Front Control Panel

Description of buttons, LEDs, and ports on the front control panel.

System Power

General Description and Scope

Overview and scope of the power supply specification (FSP800-20ERM).

Electrical Performance

Detailed electrical specifications and performance criteria.

AC Power Input Specification

Specifications for AC input voltage, frequency, and connectors.

Input Current

Maximum input current ratings for various input voltages.

Efficiency

Module efficiency requirements for 80Plus Platinum rating.

Susceptibility Requirements

Immunity requirements for EMI, transients, surges, and ESD.

Surge Immunity

Immunity requirements against AC Ringwave and AC Unidirectional surges.

AC Line Transient Specification

Performance during AC line sag and surge conditions.

AC Line Fast Transient (EFT) Specification

Requirements for fast transient (EFT) immunity.

DC Output Voltages

Specifications for DC output voltages and their regulation.

Output Rating

Power and current ratings for the +12V and +12Vsb outputs.

Voltage Regulation

Voltage regulation requirements for output voltages under various conditions.

Ripple and Noise Regulation

Specifications for output ripple and noise levels.

Dynamic Loading

Requirements for step loading and capacitive loading.

Load Sharing Control

Active load sharing capabilities for parallel power supplies.

Timing Requirements

Timing requirements for power supply operation and turn-on/off signals.

Output Voltage Timing

Timing specifications for output voltage rise and fall.

Control and Indicator Functions

Input and output signals for power supply control and status indication.

PSON# Input Signal (Power Supply Enable)

Description of the PSON# signal for remote power on/off control.

Power OK (PG or PWOK) Output Signal

Description of the Power Good (PWOK) signal indicating output status.

Protection Circuits

Overview of internal protection circuits like OVP, OCP, and OTP.

Over Voltage Protection (OVP)

Protection against over-voltage conditions on main and auxiliary outputs.

Over Current and Short Circuit Protection (OCP/SCP)

Protection against over-current and short-circuit conditions.

Over Temperature Protection (OTP)

Protection against over-temperature conditions.

Fan Failure Protection

Detection and handling of power supply internal fan failures.

Power Supply Management

Features related to power supply management and communication.

Power Supply Management Controller (PSMC)

Details on PSMC compatibility, addresses, and related documents.

Sensor Accuracy

Smart On Function

PMBus Command for Smart On

Smart Standby Power Supply Operating State

Enabling the Smart On Function

Reliability, Warranty, and Service

Mean Time Between Failures (MTBF)

Thermal Management

Thermal Operation and Configuration Requirements

Guidelines for operating within maximum thermal limits and configuration.

Thermal Management Overview

Components and strategies for maintaining airflow and system cooling.

Fan Speed Control

BMC support for monitoring and controlling fan speed (RPM).

Programmable Fan PWM Offset

Hot-Swap Fans

Fan Redundancy Detection

Thermal and Acoustic Management

Thermal Sensor Input for Fan Speed Control

Using IPMI sensors as input for fan speed control algorithms.

System Fans

Power Supply Module Fans

System Storage and Peripheral Drive Bay Overview

Front Mount Drive Support

System Fan RVI and HDD Performance

External Hot Swap Drive Carriers

12x3.5-inch Drive Hot-Swap Backplane Overview

12G Mini SAS HD 12 Port Backplane

Front Control Panel and I/O Panel Overview

I/O Panel Features

Control Panel Features

PCIe Riser Card Support

Riser Card Assembly

Riser Card Options

Intel I/O Module Support

Basic and Advanced Server Management Features

Dedicated Management Port

Embedded Web Server

Web server and GUI for BMC manageability, including supported browsers.

Advanced Management Feature Support (RMM4 Lite)

Features enabled by the optional Intel RMM4 Lite module, including KVM.

Keyboard, Video, Mouse (KVM) Redirection

Remote KVM access and control over LAN for server management.

Remote Console

Functionality and requirements for the Remote Console Java applet.

Media Redirection

Mounting remote IDE, USB CD-ROM, floppy, or USB flash disk as remote devices.