IBM H SERIES RS/6000 User Manual

Also see for H SERIES RS/6000: Installation and service guide Installation and service guide

Service Processor System Monitoring - SurveillanceSurveillance is a function in which the Service Processor monitors the system, andthe system monitors the Service Processor. This monitoring is accomplished by peri-odic samplings called heartbeats.Surveillance is available during two phases:1. System firmware bringup (automatic)2. Operating system runtime (optional)System Firmware Surveillance: Provides the Service Processor with a meansto detect boot failures while the system firmware is running.System firmware surveillance is automatically enabled during system power-on. Itcannot be disabled via a user selectable option.If the Service Processor detects no heartbeats during system IPL (for 7 minutes), itcycles the system power to attempt a reboot. The maximum number of retries is setfrom the Service Processor menus. If the fail condition repeats, the ServiceProcessor leaves the machine powered on, logs an error and offers menus to theuser. If Call-out is enabled, the Service Processor calls to report the failure and dis-plays the operating system surveillance failure code on the operator panel.Operating System Surveillance: Provides the Service Processor with a meansto detect hang conditions, hardware or software failures while the operating system isrunning. It also provides the operating system with a means to detect the ServiceProcessor failure by the lack of a return heartbeat.Operating system surveillance is enabled by default. This is to allow the user to runoperating systems that do not support this Service Processor option.Operating system surveillance can be enabled and disabled via: service processor Menus service processor Service AidsThree parameters must be set for operating system surveillance:1. Surveillance enable/disable2. Surveillance intervalThis is the maximum time in minutes the Service Processor should wait for aheartbeat from the operating system before timeout.3-28 RS/6000 Enterprise Server Model H Series User's Guide