Technical Product Specification

Intel® Server Boards S4600LH2/T2 TPS
Revision 2.0
179
10. OS Boot Watchdog Timer
Option Values: Enabled
Disabled
Help Text:
BIOS programs the watchdog timer with the timeout value selected. If the OS does not complete
booting before the timer expires, the BMC will reset the system and an error will be logged.
Requires OS support or Intel Management Software Support.
Comments: This option controls whether the system will set the BMC Watchdog to detect an
apparent to be a hang during OS booting. BIOS sets the timer before starting the OS bootstrap load
procedure. If the OS Load Watchdog Timer times out, then presumably the OS failed to boot properly.
If the OS does boot up successfully, it must be aware of the OS Load Watchdog Timer and immediately
turn it off before it expires. The OS may turn off the timer, or more often the timer may be repurposed
as an OS Watchdog Timer to protect against runtime OS hangs.
Unless the OS does have timer-aware software to support the OS Load Watchdog Timer, the system
will be unable to boot successfully with the OS Load Watchdog Timer enabled. When the timer expires
without having been reset or turned off, the system will either reset or power off repeatedly.
Back to [Server Management Screen
]
11. OS Boot Watchdog Timer Policy
Option Values: Power off
Reset
Help Text:
If the OS watchdog timer is enabled, this is the system action taken if the watchdog timer
expires.
[Reset] - System performs a reset.
[Power Off] - System powers off.
Comments: This option is grayed out and unavailable when the O/S Boot Watchdog Timer is
disabled.
Back to [Server Management Screen
]
12. OS Boot Watchdog Timer Timeout
Option Values: 5 minutes
10 minutes
15 minutes
20 minutes
Help Text:
If the OS watchdog timer is enabled, this is the timeout value BIOS will use to configure the
watchdog timer.
Comments: This option is grayed out and unavailable when the O/S Boot Watchdog Timer is
disabled.
Back to [Server Management Screen
]