Vertical WAVE IP 2500, Hardware Reference Manual

Page: 164 / 210

Overview A
-
2
Appendix A: Fault Monitor Module and Trace Log
Wave Server Hardware Reference Guide
Watchdog timer
The FMM watchdog timer can restart the system automatically if it does not receive a “keep
alive” command, or “handshake”, from the low-level system driver. The timer is normally
cleared once per second when it receives the handshake. The timer is always running. However,
if it is disabled, no action is taken when it times out. By default, it is set to time out at 3 minutes
without a handshake, or 15 minutes at the initial system startup.
32K SRAM trace log buffer
The Fault Monitor Module trace log is a subset of the system trace log, with additional trace
entries from the Fault Monitor Module itself. The FMM log is stored in flash memory whenever
the system is shutdown or restarted in an orderly fashion: a) Red button press on the ISC1/ISC2
face plate; b) Windows restart or shutdown from a Remote Desktop session, or a
monitor/keyboard connected to the system; or c) Shutdown from the
Wave Global
Administrator . The FMM log will NOT be saved in flash memory if the power supply is turned
off abruptly (i.e., not following an orderly shutdown), or if the reset button on the ISC1/ISC2
face plate is pressed.
Fault monitor buffer
The Fault Monitor main buffer is implemented as a circular buffer so that it always contains the
most current traces. The buffer is 32K bytes, and can contain around 250 traces, depending on
the size of each trace entry. On each system reboot, the entire contents of this buffer is saved to
the file
fmlog .*. txt , where the * represents the date and time the traces were saved. You can find
the fmlog .*. txt files on the Wave hard drive in the C:/Program Files/InstantOffice/Logs
directory.
Status indicators
There are four status LEDs and two card LEDs on the ISC1/ISC2 that indicate the boot progress
and general health of the system. Refer to Appendix E for more information about the ISC1 &
ISC2 LEDs.
Release 2.0 Service Pack 1 April 2011