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. FIGURE1-2 and FIGURE1-3 illustrate the
components. See Section 1.3, “Components” on page 1-9 for a brief description of
each component.
FIGURE1-2 M4000 Server (Internal Front View)
Location
Number Component
MaximumNumber
perServer
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