Compaq ProLiant ML330 G2 Service Overview
6
Rev. 1.0
Page
6 of 20
Next Generation Remote Insight Support
The ML330 G2 has two connectors on the system board to support Remote Insight, Lights-Out
Edition boards. The 16-pin connector will support the existing board, while the 30-pin connector
will support the next generation board.
Enhanced Fan Control
A temperature-sensing device located near the processors now monitors the temperatures of both
processors and the ambient temperature of the chassis. When any of these three temperatures
reaches a predefined limit, the fan speed increases to control the temperature in the system.
Server Feature Bus
The Server Feature Bus is a proprietary bus that has PCI and management signals. Running the
management signals through this bus eliminates the need for the System Management Interface
Cable (SMIC) that was compulsory in the first generation ML330.
Server Feature Board
The server feature bus slot, located at the bottom of the system board, houses the Server Feature
Board. This board contains the ATA or SCSI, NIC, video, and management controllers.
There are two Server Feature Boards
―
one for the SCSI models, the other for the ATA models.
Other than the drive controllers and associated connectors, the two boards are identical. The
SCSI models ship with only a SCSI drive controller; the ATA models ship with only an ATA
drive controller.
NMI Debug Button
The NMI Debug button is located on the Server Feature Board. NMI is a diagnostic mechanism
that allows for crash dump files to be created in situations when a system is hung and unable to
respond to traditional debug mechanisms. The NMI Debug button can be used to diagnose
software failures by forcing the operating system to invoke the Non-Maskable Interrupt (NMI)
handler and generate a crash dump log. This log can provide critical troubleshooting information
that may be difficult or impossible to obtain through other means.
The user initiates a Non Maskable Interrupt (NMI) by pressing the NMI Debug button. The NMI
can allow a hung system to become responsive enough to generate a crash dump log. The button
is enabled/disenabled in RBSU.
Warning!
The NMI Debug button causes the unit to abruptly fail, as it is designed to do.
Therefore, it should never be used during normal operation.
ASR-2 is used when an
automated
crash dump is desired. Normally, ASR-2 provides a system
reset; however, ASR-2 can be configured to generate the NMI Crash Dump instead of a reset.