Chapter 1 System Overview 1-9
For complete details on the operator panel controls, refer to theSPARC Enterprise
M4000/M5000 Servers Service Manual.
1.3 Components
The components of both midrange servers are described in the following sections:
■Section 1.3.1, “Motherboard Unit” on page 1-10
■Section 1.3.2, “CPU Module” on page 1-11
■Section 1.3.3, “Memory Board” on page 1-13
■Section 1.3.4, “Fan Unit” on page 1-15
■Section 1.3.5, “Power Supply” on page 1-17
■Section 1.3.6, “Operator Panel” on page 1-20
■Section 1.3.7, “eXtended System Control Facility Unit (XSCFU)” on page 1-23
■Section 1.3.8, “I/O Unit” on page 1-26
■Section 1.3.9, “On-Board Drive Units” on page 1-28
■Section 1.4.1, “External I/O Expansion Unit” on page1-31
TABLE1-3 identifies the FRU components. Components using “hot FRU replacement”
can be removed from the server and replaced while the operating server is running
without performing a dynamic reconfiguration operation. Components using “active
FRU removal” must be dynamically reconfiguredout of the domain before removing
the component.
TABLE1-3 FRUComponents for Both Midrange Servers
Component Redundant
Cold
Replacement
Hot
Replacement
Active
Replacement
Motherboardunit No Yes
CPU module No Yes
Memory board No Yes
DIMM No Yes
eXtended System ControlFacility unit (XSCFU) No Yes
I/O Unit No Yes
PCI cassette with PCI card No Yes Yes Yes
Fan unit Yes Yes Yes Yes
Fan backplane No Yes