Silicon Graphics SGI Altix 3700 Bx2, User Manual

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Chapter 6
6. IX-brick
The IX-brick is an I/O expansion subsystem that connects I/O devices to your system by
using either the PCI or PCI-X protocol. The PCI-X protocol enables I/O devices to
operate at clock speeds of up to 133 MHz, or 1 Gbit/s. This protocol also enables I/O
devices to operate more efficiently, thereby providing a higher sustained bandwidth at
any clock frequency. By supporting this protocol, the IX-brick addresses the need for
increased bandwidth of PCI devices.
The IX-brick also has the components (disk drives and DVD-ROM) that are required to
run your operating system or install other software applications or upgrades.
This chapter describes the function and physical components of the IX-brick, and it
describes how to install and replace PCI cards and disk drives. Specifically, it includes the
following information:
• “Product Overview” on page 76
• “External Components” on page 79
• “PCI and PCI-X Card Configuration Guidelines” on page 83
• “Technical Specifications” on page 85
Note: Throughout this chapter, the term “PCI card” refers to cards with PCI or PCI-X
capabilities. When necessary, distinctions between the cards are noted.
Note: For information about installing or replacing a PCI card, see “Adding or Replacing
a PCI or PCI-X Card” on page 136.