Chapter 3: Technical Data
Service Manual
39
Platform Management
Platform management is provided on the EPC-3221 SCB by an on-board intelligent platform
management (IPM) controller. The IPM controller is capable of monitoring environmental
sensors on the EPC-3221 SCB and communicating with other IPM controllers in an IPM-
capable chassis.
The monitoring and logging functions of the IPM subsystem are independent of the main
processors, BIOS, and operating system. This allows devices supporting IPM to communicate
even when the system is not powered or operational.
Inter-device communication is provided by the Intelligent Platform Management Bus (IPMB)
which connects all intelligent devices. The Inter-Integrated Circuit (I
2
C) interface enables the
IPMB and is located in the passive backplane of a chassis.
Intelligent devices communicate general state information and alert information (such as
warnings or critical conditions) to a centralized management controller, the Baseboard
Management Controller (BMC). The BMC provides a System Event Log (SEL) for storing
events generated by IPM devices in the chassis.
Figure 13
shows an EPC-3221 SCB in a typical platform management environment.
Figure 13. SCB Platform Management
Display
Module
(optional)
Intel
Processor
BMC
Keyboard
Controller-
Style Interface
IPMI
IPMI
Alarm
Board
(optional)
IPMI
External
Interface
Power
Supplies
IPMI
Fans
System Management Components
IPMI
IPMB
EPC-3221
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com