Sun Fire V445 Server Administration Guide - SCN Research

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your configuration requires a high-speed Ethernet port, use one of the Gigabit
Ethernet ports instead. For information on configuring the Gigabit Ethernet ports,
see Chapter 7.
The ALOM system controller card must be installed in the system for the system
to function properly.
About the PCI Cards and Buses
All system communication with storage, peripherals and network interface devices
is mediated by four buses using three Peripheral Component Interconnect (PCI)
bridge chips on the system motherboard. The Fire ASIC PCI-Express (PCIe)
Northbridge manages communication between the system main interconnect bus (J-
Bus) and two PCI-Express buses. In addition, two PCI-Express/PCI-X bridge ASICs
manage communication from each PCI-Express bus to two PCI-X buses, giving the
system a total of four PCI buses. The four PCI buses support up to four PCI-Express
interface cards and four PCI-X interface cards, as well as multiple motherboard
devices.
TABLE 4-2 describes the PCI bus characteristics and maps each bus to its associated
bridge chip, integrated devices, and PCI card slots. All slots comply with PCI Local
Bus Specification Revision 2.2.
Note – PCI cards in a Sun Fire V445 server are not hot-pluggable or hot-swappable.
Chapter 4 Configuring Hardware 75