Technical data

Major Components

Node boards 3 and 4 also have corresponding XIO slots indicated by a circle or a triangle.

For example, if Node boards are installed in slots 1 and slot 3, then only the

corresponding XIO slots (1 through 6) are activated.

Figure 2-3 Board Conﬁguration and Layout for System Module

Major Components

This section describes major hardware components for the SGI 2400 and 2800 rack, which

includes the following:

• System Controller

• BaseIO board

• CPU Node board

• Router board

• Power distribution unit (PDU)

• CrayLink Interconnect cable

• PCI carrier assembly

IO11

IO9

IO7

IO5

IO3

IO1

Node 1

Node 2

Node 3

Node 4

IO12

IO10

IO8

IO6

IO4

IO2

Node slots

Router Router

XIO slots