Sun Oracle Fire X4440, Руководство по обслуживанию

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1-4 Sun Fire X4440 Server Service Manual • September 2010
1.2.1 Infrastructure Boards
The
Sun Fire X4440
has the boards listed in
TABLE 1-2
installed in the chassis.
TABLE 1-2
Infrastructure Boards
Board Description Reference
Motherboard
FRU The motherboard is on a removable tray. It has 16 DIMM slots
and the service processor (ILOM) subsystem. Hyper-transport
connector slots to a mezzanine tray support two additional
processors and memory.
The server motherboard provides an integrated lights out
management (ILOM) service processor function, which includes
remote boot and remote software upgrades. The service
processor (ILOM) subsystem controls the host power and
monitors host system events (power and environmental). The
iILOM controller draws power from the host’s 3.3V standby
supply rail, which is available whenever the system is receiving
AC input power, even when the system is turned off. Section 4.7, “Servicing
the Motherboard
Assembly” on page 4-34
Refer to the Sun Fire
4140, 4240, and 4440
Server Diagnostics
Guide for ILOM sensor
information.
Refer to the
Sun
Integrated Lights Out
Manager 2.0 User's Guide
Mezzanine tray
FRU This removable mezzanine tray includes 2 additional CPU
modules, slots for 16 DIMMs, and memory control subsystems. Section 4.2, “Servicing
the Mezzanine Tray” on
page 4-12
Power
distribution board
FRU This power distribution board board distributes main 12V power
from the power supplies to the rest of the system. It is directly
connected to the Vertical PDB card, and to the motherboard
through a bus bar and ribbon cable. It also supports a top cover
interlock (“kill”) switch.
In the Sun Fire X4440, the power supplies connect to the power
supply backplane which connects to the power distribution
board. Section 5.5, “Servicing
the Power Distribution
Board (PDB)” on
page 5-14
Vertical PDB card
FRU
This vertical power distribution board serves as the interconnect
between the power distribution board and the fan power boards,
drives backplane, and I/O board. Section 5.7, “Servicing
the Paddle Card” on
page 5-19
Power supply
backplane card
FRU This board connects the power distribution board to power
supplies 0 and 1. Section 5.6, “Servicing
the Power Supply
Backplane” on page 5-17
Fan power boards
(2)
FRU These boards carry power to the system fan modules. In
addition, they contain fan module status LEDs and transfer I
2
C
data for the fan modules.
Section 5.1, “Servicing
the Fan Power Boards”
on page 5-2