HP ML570 HP ProLiant ML570 Generation 2 Server Setup and Installation Guide - Page 250

System LEDs and Switches Non-Maskable Interrupt Switch Crash dump analysis is an essential part of determining the cause of problems such as hangs or crashes in operating systems, device drivers, and applications. Many crashes freeze a system requiring you to do a hard reset. Resetting the system erases any information that supports root cause analysis. When an operating system crashes, system administrators can perform a non-maskable interrupt (NMI) event by pressing a dump switch. The NMI event enables a hung system to once again become responsive enough to provide debug information. The NMI switch is used ONLY in the event of a service emergency that requires a complete data dump in preparation for recovering the system from a catastrophic event. System Configuration Settings It may be necessary at some time to clear and reset system configuration settings. When the system maintenance switch position 6 is set to the on position, the system is prepared to erase all system configuration settings from both CMOS and NVRAM. For additional information about locating the switch and switch settings, refer to "System Maintenance Switch" in this appendix. The default setting for all positions is off. IMPORTANT: Clearing CMOS and/or (NVRAM) deletes your configuration information. Refer to Chapter 8, "Server Configuration and Utilities," for complete instructions on configuring the server. HP ProLiant ML570 Generation 2 Server Setup and Installation Guide C-19