Specifications
x
24.5.2 System Clock Synchronization ..................................................................................................................................... 261
24.6 System Event Log (SEL) .................................................................................................................................... 261
24.6.1 Servicing Events ........................................................................................................................................................... 261
24.6.2 SEL Entry Deletion ....................................................................................................................................................... 261
24.6.3 SEL Erasure ................................................................................................................................................................. 261
24.7 Sensor Data Record (SDR) Repository.............................................................................................................. 261
24.7.1 SDR Repository Erasure .............................................................................................................................................. 262
24.7.2 Initialization Agent ........................................................................................................................................................ 262
24.8 Field Replaceable Unit (FRU) Inventory Device ................................................................................................ 262
24.8.1 BMC FRU Inventory Area Format ................................................................................................................................ 262
24.8.2 BMC FRU ID Mapping .................................................................................................................................................. 262
24.9 Diagnostics and Beep Code Generation ............................................................................................................ 263
24.9.1 Signal Generation ......................................................................................................................................................... 263
24.10 Sensor Rearm Behavior ................................................................................................................................... 264
24.10.1 Manual vs. Rearm Sensors ........................................................................................................................................ 264
24.10.2 Rearm and Event Generation ..................................................................................................................................... 264
24.11 Processor Sensors ........................................................................................................................................... 264
24.11.1 Processor Status Sensors .......................................................................................................................................... 265
24.11.2 Processor VRD Over-Temperature Sensor ................................................................................................................ 266
24.11.3 Digital Thermal Sensor ............................................................................................................................................... 266
24.11.4 Processor Thermal Control Monitoring (Prochot) ....................................................................................................... 266
24.12 Voltage Monitoring............................................................................................................................................ 266
24.13 Standard Fan Management .............................................................................................................................. 267
24.13.1 Hot Swap Fans ........................................................................................................................................................... 267
24.13.2 Fan Redundancy Detection ........................................................................................................................................ 268
24.13.3 Fan Domains .............................................................................................................................................................. 268
24.13.4 Nominal Fan Speed .................................................................................................................................................... 268
24.13.5 Thermal and Acoustic Management (Acoustic Monitoring) ........................................................................................ 271
24.14 DIMM Thermal Margin Sensor ......................................................................................................................... 272
24.15 IOH thermal Margin Sensor .............................................................................................................................. 273
24.16 Memory Buffer Thermal Margin Sensor ........................................................................................................... 273
24.17 Add In Card Thermal Margin Sensor ................................................................................................................ 273
24.18 Power Throttle Sensor ...................................................................................................................................... 273
24.19 Memory Riser Power Failure Monitoring .......................................................................................................... 274
24.20 Memory Hot Plug and Memory Offline/Online .................................................................................................. 274
24.20.1 Semaphore Operation ................................................................................................................................................ 274
24.20.2 Sequence of Operations during Memory Hot Plug ..................................................................................................... 275
24.21 HeartBeat LED ................................................................................................................................................. 276
24.22 CSS LED .......................................................................................................................................................... 277
24.23 Global Fan Fault LED ....................................................................................................................................... 277
24.24 Power Management Bus (PMBus) ................................................................................................................... 277
24.24.1 PMBus Addressing ..................................................................................................................................................... 277
24.24.2 PMBus -specific Sensor Support ................................................................................................................................ 278
24.25 Power Unit Management .................................................................................................................................. 278
24.25.2 Power Supply Fan Monitoring .................................................................................................................................... 279
24.25.3 Power Supply Fan Speed Control .............................................................................................................................. 280
24.25.4 Power Supply Failure Management ........................................................................................................................... 281
24.25.5 Power Supply Status Sensors .................................................................................................................................... 281
24.25.6 Power Unit Redundancy ............................................................................................................................................. 282
24.26 3.28 Event Message Generation and Reception ............................................................................................. 282
24.27 3.29 Event Logging Disabled Sensor ............................................................................................................... 282
24.28 3.30 SMI Timeout Sensor ................................................................................................................................. 282
24.29 BMC Self Test .................................................................................................................................................. 282
24.30 BMC Test Commands ...................................................................................................................................... 282
24.31 Component Fault LED Control ......................................................................................................................... 283
24.31.1 Set Fault Indication Command ................................................................................................................................... 283
24.31.2 DIMM Mapping for Fault Indication and Fan Control Config: ...................................................................................... 283
24.32 Hot-Swap Controller ......................................................................................................................................... 284