IBM 6H0, Service Manual

Page: 425 / 561

You can also use the service processor menus and the AIX diagnostic service aids 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
The maximum time the service processor waits between heartbeats from the
operating system before reporting a surveillance failure.
v
Surveillance delay
The maximum time the service processor waits for the first heartbeat from the
operating system, after the operating system has been started, before reporting a
surveillance failure.
Surveillance does not take effect until the next time the operating system is started after
the parameters have been set.
You can initiate surveillance mode immediately from service aids. In addition to the
three options above, a fourth option allows you to select immediate surveillance, and
rebooting of the system is not necessarily required.
If operating system surveillance is enabled (and system firmware has passed control to
the operating system), and the service processor does not detect any heartbeats from
the operating system within the surveillance delay period, the service processor
assumes the system is hung and takes action according to the reboot/restart policy
settings. See “Service Processor Reboot/Restart Recovery” on page 398.
If surveillance is selected from the service processor menus that are only available at
bootup, then surveillance is enabled by default as soon as the system boots. From
service aids, the selection is optional.
Call-Out (Call-Home)
The service processor can call out (call-home) when it detects one of the following
conditions:
v System firmware surveillance failure
v
Operating system surveillance failure (if supported by operating system)
v
Restarts
v Critical hardware failure
v
Abnormal operating system termination
To enable the call-out feature, do the following:
1. Connect a modem to serial port 1 (S1) or serial port 2 (S2).
2. Set up the following using the service processor menus or the diagnostic service
aids:
v
Enable call-out for the serial port where the modem is connected.
Chapter 7. Using the Service Processor
405