User`s guide

12 Miscellaneous

12.1 System Watchdog (WD)

conga-IGX provides full Operating System Boot- and Operating System-Runtime HW Watchdog supervision.

Power On BIOS POST OS Boot OS running

BOOT-WD-timeout

(according to BIOS Setup)

BIOS Boot Watchdog OS Watchdog

OS-WD-timeout (max. 255 minutes)

(according to specific WD software agent)

OS started. If the watchdog has been enabled by BIOS (meout

set to xy minutes in BIOS Setup) it must be switched oﬀ or

retriggered (connuously) by a speciﬁc OS applicaon (=WD

soware agent), otherwise the system will be reset aer xy

minutes (= BOOT-WD-meout) respecvely aer nn minutes

(repeve OS-WD-meout).

If the watchdog is enabled in BIOS Setup (meout set to xy ≥ 1 minutes) and the

system hangs during OS boot, the system will be reset aer xy minutes.

If the watchdog is enabled in BIOS Setup (meout set to xy ≥ 1 minutes) and the system hangs

during OS boot, the system will be reset aer xy minutes.

Note:

Both watchdogs are physically idencal, but they are handled from diﬀerent applicaon levels

How to handle the two watchdog levels

BIOS Boot Watchdog

Set Watchdog Timeout in BIOS Setup

0 = WD disabled

1 – 255 = WD enabled (timeout = 1 – 255 minutes)