Filter
Top Products
10 Intel
®
NetStructure™ MPCHC5525 System Master Processor Board IPMI Reference Driver User’s Guide
IBMU Functionality
2.1.3 Where Is IPMI-Relevant Information Stored?
The following table shows which information is stored in which repository of a BMC/PM.
The IBMU provides approximately 100 Kbytes of flash memory for each repository.
The following figure shows the repositories available in IPMI controllers operated as BMC or PM
after the SDRs of the PMs were copied into the BMC’s SDR repository. Nonintelligent devices
provide none of the repositories.
Table 3. Data in Repositories
Information Repository Available in
Inventory information on board or device: Manufacturer ID, product ID etc.
Field Replaceable
Unit (FRU)
PM and BMC
Messages concerning events, such as abnormal voltages, out-of-range
temperatures etc.
System Event Log
(SEL)
BMC
Sensor data records (SDRs) of all sensors on a board. SDRs contain, for
example, threshold values, conversion factors, and information on
whether events are generated.
Local SDR PM and BMC
SDRs of all sensors available in the entire system. At first, the SDR
repository of the BMC is empty, and the SDRs of all PMs must be copied
into the BMC’s SDR repository (will be explained later).
SDR BMC
Figure 1. Repositories of BMC and PMs