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Chapter 4 Hardware and Software Configuration 85
The table below shows the mapping of the PCI slots to the two PCI buses and the
type of PCI cards supported in each slot.
For the board addresses of the PCI slots on the main logic board, see the Sun Fire
280R Server Service Manual.
Configuration Rules
The following rules apply for your system:
■ All slots support PCI universal cards.
■ All slots support PCI long or short cards.
■ Each slot can supply up to 15 watts of power.
■ The total power used for all four slots must not exceed 60 watts.
You can install PCI cards into any compatible PCI slots. Slots need not be filled in
any particular order. In most cases, the system’s I/O performance will be unaffected
by placement of PCI cards in the slots. Heavily loaded systems, however, will
deliver better overall performance by installing high-throughput interface cards on
separate buses. Examples of high-throughput interfaces are dual-channel UltraSCSI
host adapters and ATM-622 interfaces.
You can also improve overall system availability by installing redundant storage or
network interfaces on separate PCI buses.
Back Panel
Slot Label
Board
Address
PCI
Bus
Slot Width (bits)/
Card Type (bits)
Clock
Rates
(MHz)
DC Voltage/
Card Type
PCI 1 J2301 A 64 / 32 or 64 33 or 66 3.3 v or Universal
PCI 2 J2401 B 64 / 32 or 64 33 5.5 v or Universal
PCI 3 J2501 B 64 / 32 or 64 33 5.5 v or Universal
PCI 4 J2601 B 32 / 32 33 5.5 v or Universal