HP Integrity rx7620 Server - User Service Guide, Sixth Edition

Figure 5-10 Disk Drive LED Location
Table 5-10 Disk Drive LEDs
DescriptionFlash RateStatus LEDActivity LED
Normal operation, power appliedSteadyGreenOff
Green stays on during foreground drive self-testSteadyOffGreen
I/O disk activityFlutter at rate of
activity
OffGreen
Predictive failure, needs immediate investigationFlashing at 1Hz or
2 Hz
YellowOff
Operator inducing manuallyFlashing at 0.5Hz
or 1Hz
YellowOff
Module fault, criticalSteadyYellowOff
Unit not powered or installedLEDs offOffOff
Server Management Subsystem Hardware Overview
Server management for the HP Integrity rx7620 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 enables 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. It also
communicates with the operating console and session gettys by universal asynchronous
receiver-transmitters (UARTs) on the core I/O PCI bus.
Connection to the MP is by way of three I/O paths:
• An RS-232 port for a local terminal
• An RS-232 port for a modem connection
• 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 0, since the
master MP is always the MP on the core I/O board in slot 0.
When the server is configured for two partitions, it must contain two core I/O boards, one for
each partition. It also contains two MPs. In this case, the MP in slot 0 is the master MP and
provides all of the server management functions. The MP on the core I/O board in slot 1 is a slave
MP and redirects the operating system gettys to the master MP over an internal MP-to-MP link.
All external connections to the MP must be to the master MP in slot 0. The slave MP ports are
disabled.
For high availability (HA), the server powers on and powers off without an MP. Booting HP-UX
without an MP depends on the ability of the operating system to boot without a console getty.
Thus, in a two-partition system, the partition with a failed MP might not boot, since the MP
provides the console getty.
The server configuration cannot be changed without the MP.
Server Management Subsystem Hardware Overview 85