Technical data

10
TPU XIO Board Introduction
The server installation instructions provide information that can help you
determine which of the slots are activated.
Note: In general, if a module has a Node board in slot N1 or N3, then XIO slots 1-6
are available. If it has a Node board in slot N2 or N4, XIO slots 7-12 are available. If
a module has at least two Node boards (one in N1 or N3 and one in N2 or N4), then
all 12 XIO slots are available.
4. Select a slot for the TPU XIO board.
This board can be installed in any of the XIO slots–including slots 1 and 2
(illustrated in Figure 5)–that are designed to accommodate the BaseIO and Internal
PCI Adapter options. Refer to Figure 5. When you select a slot for the TPU board,
fill available odd-numbered slots before filling even-numbered slots, and fill
lower-numbered slots before higher-numbered slots. For servers with 2 or more
nodes, refer to Table 3 for the recommended slot order of installation.
Table 3 Installing TPU Boards to Equalize Bandwidth and Control (Two or More Nodes)
Order of Installation Start Loading XIO Slots Node Board that Controls the XIO Slot
First XIO Board IO1 Nodes 1 and 3
Next XIO Board IO7 Nodes 2 and 4
Next XIO Board IO4 Nodes 1 and 3
Next XIO Board IO8 Nodes 2 and 4
Next XIO Board IO3 Nodes 1 and 3
Next XIO Board IO9 Nodes 2 and 4
Next XIO Board IO6 Nodes 1 and 3
Next XIO Board IO10 Nodes 2 and 4
Next XIO Board IO5 Nodes 1 and 3
Next XIO Board IO11 Nodes 2 and 4
Next XIO Board IO12 Nodes 2 and 4
Final XIO Board IO2 Nodes 1 and 3