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Chapter 3 Hardware Configuration 33
Configuration Rules
■ Three slots (0, 1, 2) accept short or long PCI cards, while the other three (3, 4, 5)
support only short cards; that is, cards less than 7.5 inches (~19 cm) long.
■ 33-MHz slots accept 5V PCI cards; 66-MHz slots are keyed as 3.3V only cards.
■ All slots accept either 32-bit or 64-bit PCI cards.
■ All slots comply with PCI Local Bus Specification Revision 2.1.
■ Each slot can supply up to 25 watts of power. The total power used for all six slots
must not exceed 90 watts.
■ Compact PCI (cPCI) cards and SBus cards are not supported.
■ A 33-MHz add-in card plugged in to either of the 66-MHz slots will cause that
bus to operate at 33 MHz.
■ You can improve overall system availability by installing redundant network or
storage interfaces on separate PCI buses. For additional information, see “About
Multipathing Software” on page 64.
Note – Do not attempt to access any internal components unless you are a qualified
service technician. Detailed service instructions can be found in the Sun Fire V490
Server Parts Installation and Removal Guide, which is included on the Sun Fire V490
Documentation CD.
About the System Controller (SC) Card
The system controller (SC) card enables access, monitoring, and control of the
Sun Fire V490 server from a remote location. It is a fully independent processor card
with its own resident firmware, power-on self-test (POST) diagnostics, and real-time
operating system.