host interface to SDRR information, so software running on the server can poll and retrieve the current status of the hardware. A shared register interface is defined for this purpose.

SEL contents can be retrieved after system failure for analysis by field service personnel using system management tools like Intel®LANDesk® Server Manager. Because the BMC is powered by 5V_Standby, SEL (and SDRR) information is also available via the interperipheral management bus (IPMB). An emergency management board like the Intel LANDesk server management module (SMM) board can obtain the SEL and make it remotely accessible using a LAN or telephone line connection.

During monitoring, the BMC performs the following functions:System board temperature and voltage monitoringProcessor presence monitoring and fault resilient boot (FRB) controlSystem board fan failure detection and indicator controlSEL interface managementSDRR interface managementSDR/SEL timestamp clockSystem board field replaceable unit (FRU) information interfaceSystem management watchdog timerPeriodic system management interrupt (SMI) timerFront panel non-maskable interrupt (NMI) handlingEvent receiverISA host and IPMB interface management

Secure mode control, front panel lock/unlock initiation, and video blank and diskette write protect monitoring and control

Sensor event initialization agentWake-on-LAN via Magic Packet supportACPI SupportEmergency Management Port (EMP) support

System Board Connectors 17