Server Management - Silicon Graphics 1450 User Manual

Server Management

007-4274-001
Server management features are implemented using one micro controller called the
Baseboard Management Controller (BMC).
The BMC and associated circuitry are powered from 5 V standby, which remains active
when system power is switched off. The BMC is IPMI 1.0 compliant.
The primary function of the BMC is to autonomously monitor system platform
management events and log their occurrence in the nonvolatile System Event Log (SEL).
The BMC is compliant to the Intelligent Platform Management Interface Specification,
Version 1.0. These events include over-temperature and over-voltage conditions, fan
failure, or chassis intrusion. While monitoring, the BMC maintains the nonvolatile
Sensor Data Record Repository (SDRR), from which run-time information can be
retrieved. The BMC provides an interface to SDRR information, so software running on
the server can poll and retrieve the current status of the platform. A shared register
interface is defined for this purpose.
Field service personnel can retrieve SEL contents after system failure for analysis by
using system management tools like Intel LANDesk Server Manager, Intel Server
Control (ISC), or Direct Platform control (DPC). Because 5 V standby provides power the
BMC, SEL (and SDRR) information is also available via the interperipheral management
bus (IPMB). During monitoring, the BMC performs the following functions:
• Baseboard temperature and voltage monitoring
• Processor presence monitoring and FRB control
• Baseboard fan failure detection and indicator control
• SEL interface management
• Sensor Data Record Repository (SDRR) interface management
• SDR/SEL timestamp clock
• Baseboard Field Replaceable Unit (FRU) information interface
• System management watchdog timer
• SMI/NMI Status Monitor
• Front panel NMI handling
• Event receiver
• IPMB Management Controller Initialization Agent
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