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Appendix C FRU List C-9
Refer to “Fan Modules Replacement” on page 10-1 for replacement procedures.
C.7 eXtended System Control Facility Unit
The eXtended System Control facility unit (XSCFU or XSCF unit) contains the
service processor that operates and administrates the servers. It diagnoses and starts
the entire system, configures domains, offers dynamic reconfiguration, as well as
detects and notifies various failures.
The XSCF unit uses the eXtended System Control Facility (XSCF) software to
provide the following functions:
■ Controls and monitors the main unit hardware
■ Monitors the Solaris OS, power-on self-test (POST), and the OpenBoot PROM
■ Controls and manages the interface for the system administrator (such as a
terminal console)
■ Administers device information
■ Messages various events remotely
■ Interlocks power due to remote cabinet interface (RCI)
Note – To use RCI, a SPARC Enterprise server or a device with an RCI port is
required.
Both midrange servers have one XSCF unit, which is serviced from the rear of the
system. To replace it, you must power off the server.
Refer to “XSCF Unit Replacement” on page 9-1 for replacement procedures.
Hot replacement
capability
Yes Yes
Cold replacement
capability
Yes Yes
Redundant cooling
2 172-mm fans (1 + 1 redundant)
2 60-mm fans (1+ 1 redundant)
4 172-mm fans (2 + 2 redundant)
TABLE C-6 Fan Module Features (Continued)
SPARC Enterprise M4000 Server SPARC Enterprise M5000 Server