Adapter Considerations - IBM xSeries 230 6RY Hardware Maintenance Manual

Adapter considerations

Before you install adapters, review the following:
v Locate the documentation that comes with the adapter and follow those
v You can install full-length adapters in all expansion slots.
v You can install a 32-bit adapter in any of the PCI slots, but you might want to
v Your server supports 5.0 V and universal PCI adapters; it does not support 3.3 V
v Your server uses a rotational interrupt technique to configure PCI adapters.
v PCI slots 1 and 2 are on PCI bus A and PCI slots 3, 4, and 5 are on PCI bus B.
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Hardware Maintenance Manual: xSeries 230 Models 6RY, 61Y
1
PCI slot 5 64-bit (J44)
2
PCI slot 4 64-bit (J39)
3
PCI slot 3 64-bit (J34)
4
PCI slot 2 32-bit (J32)
5
PCI slot 1 32-bit (J27)
instructions in addition to the instructions given in this chapter. If you need to
change the switch or jumper settings on your adapter, follow the instructions
that come with the adapter.
install it in a 32-bit slot and use the 64-bit slots for 64-bit adapters.
adapters.
Note: Universal PCI adapters support both 3.3 V and 5.0 V operation.
Because of this technique, you can install a variety of PCI adapters that currently
do not support sharing of PCI interrupts.
Both PCI buses are primary buses. The system scans PCI slots 1 through 5 to
assign system resources; then the system starts (boots) the PCI devices in the
following order, if you have not changed the default boot precedence: PCI slots
1 and 2, system board SCSI devices, and then PCI slots 3 through 5.
Note: To change the boot precedence for PCI devices, start the
Configuration/Setup Utility program, select Start Options from the main
menu, then select the PCI SCSI adapter boot option. See "Configuring the
server" on page 31 for details on using the Configuration/Setup Utility
program.