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11-1
CHAPTER
11
XSCF Unit Replacement
This chapter explains the replacement procedures for an eXtended System Control
Facility unit (XSCFU). It covers the following:
■ Section 11.1, “Overview of the XSCFU” on page 11-1
■ Section 11.2, “Active Replacement and Hot Replacement” on page 11-5
■ Section 11.3, “Cold Replacement” on page 11-12
There are three methods for replacing an XSCFU: active replacement, hot
replacement, and cold replacement. For the definition of each type of method, see
Section 4.1, “Types of Replacement Procedures” on page 4-2.
Note – If you replace the XSCF unit and the operator panel simultaneously, system
will not operate normally. Execute the
showhardconf command or the
showstatus command to confirm that the component replaced earlier is
operating normally, before replacing the subsequent FRU.
11.1 Overview of the XSCFU
This section provides an overview of the XSCFU and describes their mounting
locations.
The XSCFU controls and manages the server hardware. There are two types of
XSCFU: the XSCFU_B, which is used for both high-end servers, and the XSCFU_C,
which is used for the expansion cabinet of the M9000. The XSCFU is duplicated, and
active maintenance can be performed on it.
FIGURE 11-1, FIGURE 11-2, and FIGURE 11-3 show the mounting locations of XSCFUs.