NEC Express5800 320La - Internal Board View; Customer Replaceable Units (Crus)

System Overview 1-13
Internal Board View
Figure 1-8 shows the major boards and backplanes inside the server.
A
B
C
D
G
H
E
F
A
Front panel board
B
Device backplane
(IDE device relay boards)
C
PCI board (located in PCI module)
D
CPU board (located in CPU module)
E
Main Backplane board
F
I/O panel board
G
Power backplane
H
SCSI backplane
Figure 1-8 Major Boards and Backplanes Inside the Server
Customer Replaceable Units (CRUs)
Certain hardware components within the server are defined as Customer Replaceable
Units (CRUs) of which most are hot-pluggable and redundant. Table 1-8 lists the CRUs
and whether they are hot pluggable or redundant hardware components.
Table 1-7. Customer Replaceable Units (CRUs)
CRU Redundant
Hot
Pluggable
CPU module Yes Yes
Device module No No
PCI module Yes Yes
Power supply Yes Yes
PCI adapter cards
Yes
"
No
Hard disk drives Yes Yes
"
Only if PCI adapter cards are identical in both PCI modules.