Managing Superdome Complexes: A Guide for HP-UX System Administrators

Managing the Overall Complex
Detecting / Controlling Power in the Complex
Chapter 3 97
Turning Service Indicator Lights (LEDs) On and Off
Within an HP Superdome complex, every cell and I/O chassis has a
service indicator LED that is an amber (orange) “attention” light. You
can illuminate these service LEDs to indicate which cells and I/O chassis
require maintenance or inspection.
Each Superdome cabinet also has a cabinet number LED on the
cabinet’s front panel. You can set this cabinet number LED to flash in
order to indicate that the cabinet’s components requires servicing.
Under normal situations when a cabinet and its components do not
require maintenance, all service and cabinet number LEDs are turned
off (not illuminated and not flashing).
You can manually turn on (illuminate or flash) the service or cabinet
number LEDs for components that require attention. You can illuminate
the service LED for any cell slot or I/O chassis slot in a cabinet,
regardless of whether the slot is empty or powered off,
Also on Superdome servers, the individual PCI slots within an I/O
chassis have attention indicator LEDs. For details on PCI card slot
lights, including how to turn them on or off, refer to the rad (1M)
manpage.
HP-UX Commands Use this procedure to turn on and turn off service indicator lights using
the fruled command.
Step 1. Log in to HP-UX running on one of the Superdome complex’s partitions.
You can turn on or off any of the service and cabinet LEDs in a
Superdome complex from HP-UX running on any of the complex’s
partitions.
You can perform this task using HP-UX commands or
Partition Manager.
• “HP-UX Commands” on page 97
• “Partition Manager” on page 99