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service. Attenuation of the error is provided through a series of light attention signals, starting
on the exterior of the system (System Attention LED) located on the front of the system, and
ending with an LED near the failing Field Replaceable Unit.
For more information about Client Replaceable Units, including videos, see:
http://publib.boulder.ibm.com/infocenter/eserver/v1r3s/index.jsp
System attention LED
The attention indicator is represented externally by an amber LED on the operator panel and
the back of the system unit. It is used to indicate that the system is in one of the following
states:
Normal state, LED is off.
Fault state, LED is on solid.
Identify state, LED is blinking.
Additional LEDs on I/O components such as PCI-X slots and disk drives provide status
information such as power, hot-swap, and need for service.
Concurrent maintenance
Concurrent Maintenance provides replacement of the following parts while the system
remains running:
Disk drives
Cooling fans
Power subsystems
PCI-X adapter cards
3.2 Manageability
The functions and tools provided for IBM IntelliStation POWER 285 workstations to ease
management are described in the next sections.
3.2.1 Service processor
The service processor (SP) is always working. CEC can be in the following states:
Power standby mode (power off)
Operating, ready to start partitions
Operating with some partitions running and an AIX 5L or Linux system in control of the
system.
The SP is still working and checking the system for errors, ensuring the connection to the
HMC (if present) for manageability purposes and accepting Advanced System Management
Interface (ASMI) SSL network connections. The SP provides the possibility to view and
manage the machine-wide settings using the ASMI and allows complete system and partition
management from HMC. Also, the surveillance function of the SP is monitoring the operating
system to check that it is still running and has not stalled.
Note: The IBM IntelliStation POWER 285 workstation service processor enables the
analysis of a system that will not boot. It can be performed from either the ASMI, HMC, or
ASCI console (depending on presence of HMC). ASMI is provided in any case.
Chapter 3. RAS and manageability
33
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