Chapter 3. Planning
45
As extreme configuration examples, you could configure either of the following:
Six 33 MHz PCI adapters, all operating at 33 MHz.
Six 133 MHz PCI-X adapters, with two operating at 133 MHz (buses C and
D), two at 100 MHz (bus B) and two at 66 MHz (bus A).
Table 3-5 summarizes the supported adapter speeds. Take into account the
speed reductions when there are two adapters installed in a bus, as described
above.
Table 3-5 Supported adapter speeds in each slot
The physical location of these slots in the server is shown in Figure 3-3 on
page 46.
Important:
A PCI-X and a PCI adapter can be installed in slots on the same
bus. However, those two adapters will both operate in PCI mode.
In addition, if you have a PCI-X adapter installed, you cannot hot-add a PCI
adapter to the same bus. This is because with just the PCI-X adapter installed,
the bus is running in PCI-X mode, and you cannot hot-add a PCI adapter into
a bus that is in PCI-X mode.
Slot
Bus
Width (bits)
Supported adapter speed (MHz)
1
A
32 or 64
33 or 66
2
A
32 or 64
33 or 66
3
B
32 or 64
33, 66, or 100 (133 as long as no adapter is in slot 4)
4
B
32 or 64
33, 66, or 100 (133 as long as no adapter is in slot 3)
5
C
32 or 64
33, 66, 100 or 133
6
D
32 or 64
33, 66, 100 or 133
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