HP rp7440 User Service Guide, Fourth Edition - HP Integrity rx7640 and HP 9000 - Page 132

Interlock Switches, Server Management Subsystem Hardware Overview

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Figure 5-9 Disk Drive LED Location Activity LED Status LED Table 5-9 Disk Drive LEDs Activity LED Off Green Green Status LED Green Off Off Off Yellow Off Yellow Off Yellow Off Off Flash Rate Description Steady Normal operation, power applied Steady Green stays on during foreground drive self-test Flutter at rate of I/O Disk activity activity Flashing at 1Hz or Predictive failure, needs immediate investigation 2 Hz Flashing at 0.5Hz Operator inducing manually or 1Hz Steady Module fault, critical LEDs off Unit not powered or installed Interlock Switches There are three interlock switches located in the server. Both side covers and the top cover have an interlock switch located underneath each cover. • Side Covers-If either side cover is removed while the system is powered on, the system fans on the front and rear increase in speed to ensure adequate cooling. An event code is generated to indicate a side cover was removed. • Top Cover-If the top cover is removed while the system power is on, the PCI-X card cage assembly I/O fan speed will not change. An event code is generated to indicate the top cover was removed. Server Management Subsystem Hardware Overview Server management for the server is provided by an MP on the core I/O board. The server management hardware is powered by standby power that is available whenever the server is plugged into primary AC power. This allows service access even if the DC power to the server is switched off. The MP communicates with the server subsystems, sensors, and PDC by internal buses. Connection to the management processor is by way of three I/O paths: • An RS-232 port for a local terminal • A 10/100/1000 baseT LAN port (Web console) When the server is configured with one core I/O board, that board must be in slot 1, since the primary MP is always on the core I/O board in slot 1. When the server is configured for two partitions, it must contain two core I/O boards, one for each partition. It will also contain two MPs. In this case, the MP in slot 1 is the primary MP and provides all of the server management functions. The MP on the core I/O board in slot 0 is a secondary MP and redirects the operating system gettys to the primary MP over an internal 132 Server Troubleshooting

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Figure 5-9 Disk Drive LED Location
Activity
LED
Status
LED
Table 5-9 Disk Drive LEDs
Description
Flash Rate
Status LED
Activity LED
Normal operation, power applied
Steady
Green
Off
Green stays on during foreground drive self-test
Steady
Off
Green
I/O Disk activity
Flutter at rate of
activity
Off
Green
Predictive failure, needs immediate investigation
Flashing at 1Hz or
2 Hz
Yellow
Off
Operator inducing manually
Flashing at 0.5Hz
or 1Hz
Yellow
Off
Module fault, critical
Steady
Yellow
Off
Unit not powered or installed
LEDs off
Off
Off
Interlock Switches
There are three interlock switches located in the server. Both side covers and the top cover have
an interlock switch located underneath each cover.
•
Side Covers—If either side cover is removed while the system is powered on, the system
fans on the front and rear increase in speed to ensure adequate cooling. An event code is
generated to indicate a side cover was removed.
•
Top Cover—If the top cover is removed while the system power is on, the PCI-X card cage
assembly I/O fan speed will not change. An event code is generated to indicate the top cover
was removed.
Server Management Subsystem Hardware Overview
Server management for the server is provided by an MP on the core I/O board. The server
management hardware is powered by standby power that is available whenever the server is
plugged into primary AC power. This allows service access even if the DC power to the server
is switched off.
The MP communicates with the server subsystems, sensors, and PDC by internal buses.
Connection to the management processor is by way of three I/O paths:
•
An RS-232 port for a local terminal
•
A 10/100/1000 baseT LAN port (Web console)
When the server is configured with one core I/O board, that board must be in slot 1, since the
primary MP is always on the core I/O board in slot 1.
When the server is configured for two partitions, it must contain two core I/O boards, one for
each partition. It will also contain two MPs. In this case, the MP in slot 1 is the primary MP and
provides all of the server management functions. The MP on the core I/O board in slot 0 is a
secondary MP and redirects the operating system gettys to the primary MP over an internal
132
Server Troubleshooting