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Appendix C FRU List C-9

Refer to Section 10.1, “Fan Module 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 Oracle 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 Section 9.1, “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)

M4000 Ser ver M5000 Server

1 2 ... 270 271 272 273 274 275 276 277 278 279 280 ... 309 310

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