4 sensor data record repository – Kontron AM4901 IPMI User Manual

Page 61

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AM5901/AM4901

IPMI Firmware User Guide

ID: 1035-8760, Rev. 3.0

Page 61

7.4

Sensor Data Record Repository

The currently valid sensors for the whole system are administered in the so called Sensor Data
Record Repository (SDRR). The MCH’s sensors are always valid as well as those of the AMC
modules as long as they are active. When AMC modules are activated or deactivated, the
SDRR is in a continuous state of flux. The order in which the AMC sensors are registered and
the sensor numbers are subject to change.

Access to the SDRR via the system management software can be effected best from an AMC
processor module over the IPMB-L bus using the free software tool “ipmitool”. In the SDRR the
sensor names for Kontron AMC modules have a prefix to identify the corresponding AMC slot
in which they are installed. The prefixes A1, A2, A3, A4, B1 and B2 designate the AMC modules
in the AMC slots 1 to 6 corresponding to FRU IDs 5 to 10. The names of the MCH sensors do
not have prefixes. MCH sensors are always present, and therefore the first sensors inside the
SDRR listing. As such it is easy to associate them with the MCH.

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