Sun Microsystems Netra T5220, Руководство по обслуживанию

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Chapter 1 Server Diagnostics 1-15
The service processor runs independently of the server, using the server’s standby
power. Therefore, ILOM firmware and software continue to function when the server
operating system goes offline or when the server is powered off.
Note – ILOM provides an ALOM CMT compatibility CLI. Refer to the Sun Integrated
Lights Out Management 2.0 Supplement for the Sun Netra T5220 Server for
comprehensive ILOM and ALOM CMT compatibility information.
Faults detected by ILOM, POST, and the Solaris Predictive Self-Healing (PSH)
technology are forwarded to ILOM for fault handling (
FIGURE 1-7
).
In the event of a system fault, ILOM ensures that the fault LED is lit, FRU ID PROMs
are updated, the fault is logged, and alerts are displayed (faulty FRUs are identified
in fault messages using the FRU name). For a list of FRU names, see
TABLE 2-1
.
FIGURE 1-7
ILOM Fault Management
The service processor detects when a fault is no longer present and clears the fault in
several ways:
■
Fault recovery – The system automatically detects that the fault condition is no
longer present. ILOM extinguishes the Service Required LED and updates the
FRU’s PROM, indicating that the fault is no longer present.
■
Fault repair – The fault has been repaired by human intervention. In most cases,
the service processor detects the repair and extinguishes the Service Required
LED. If the service processor does not perform these actions, you must perform
these tasks manually with the
clearfault
or
enablecomponent
commands.
The service processor also detects the removal of a FRU, in many cases even if the
FRU is removed while the service processor is powered off (that is, if the system
power cables are unplugged during service procedures). This situation enables ILOM
to know that a fault, diagnosed to a specific FRU, has been repaired.
Note – ILOM does not automatically detect hard drive replacement.