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Chapter 1 System Overview 1-5
■ Redundant power and cooling
■ Hot FRU replacement capability
■ I/O expandability with the External I/O Expansion Unit
1.2.1 SPARC Enterprise M4000 Server
The M4000 server is a six-rack unit (6 RU) enclosure (10.35 inches, 263 mm), which
supports up to two dynamic server domains.
FIGURE 1-2 and FIGURE 1-3 illustrate the
components. See Section 1.3, “Components” on page 1-9 for a brief description of
each component.
FIGURE 1-2 M4000 Server (Internal Front View)
Location
Number Component
MaximumNumber
per Server
1 Memory boards (MEMB) 4
2 CPU modules each containing two processor chips
(CPUM)
2
3 172-mm fans (FAN_A) 2
6
5
5
4
4
2
3
3
7
1
1
1
1
2