IBM RS/6000 44P Series 270, Руководство по обслуживанию, Страница: 197 / 346

Service Processor System Monitoring - Surveillance
Surveillance is a function in which the service processor monitors the system, and the
system monitors the service processor. This monitoring is accomplished by periodic
samplings called
heartbeats .
Surveillance is available during two phases:
v
System firmware bring-up (automatic)
v
Operating system run time (optional)
System Firmware Surveillance
System firmware surveillance provides the service processor with a means to detect
boot failures while the system firmware is running.
System firmware surveillance is automatically enabled during system power-on. It
cannot be disabled by the user.
If the service processor detects no heartbeats during system boot (for 7 minutes), it
cycles the system power to attempt a reboot. The maximum number of retries is set
from the service processor menus. If the failure condition repeats, the service processor
leaves the machine powered on, logs an error, and displays menus to the user. If
call-out is enabled, the service processor calls to report the failure and displays the
operating-system surveillance failure code on the operator panel.
Operating System Surveillance
The operating system surveillance provides the service processor with a means to
detect hang conditions, as well as hardware or software failures, while the operating
system is running. It also provides the operating system with a means to detect service
processor failure caused by the lack of a return heartbeat.
Operating system surveillance is enabled by default, allowing the user to run operating
systems that do not support this service processor option.
You can also use service processor menus and AIX service aid to enable or disable
operating system surveillance.
For operating system surveillance to work correctly, you must set the following
parameters:
v Surveillance enable/disable
v Surveillance interval
This is the maximum time (in minutes) the service processor should wait for a
heartbeat from the operating system before timeout.
v
Surveillance delay
This is the length of time (in minutes) for the service processor to wait from when the
operating system is started to when the first heartbeat is expected.
Chapter 7. Using the Service Processor
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