Understand the rules on installing hardware to a system with logical
partitions.
When you install new hardware in a partitioned environment, you
should be aware of the following things:
- Verify that your logical partition configuration is current. You might
need to clear nonreporting resources from your LPAR configuration.
- Empty positions on a shared bus might not be owned by a partition. They
should be assigned to the partition you want before installing new adapters
in them.
- A new device is owned by the logical partition which owns the I/O processor
(IOP) to which the device is attached.
- A new IOP or IOA is owned by the partition which owns the dedicated bus.
- A new IOP or IOA is owned by the partition which owns the empty position
on a shared bus.
- The primary partition owns a new system bus.
- New processors and memory are available (unassigned) to be assigned to
any partition.
- When adding or removing new disk units to your system you might need to
clear partition configuration data on the device.
- New 5250 interactive CPW is assigned across partitions by the percentage
specified in the create wizard. After an upgrade, ensure partitions are not
assigned more 5250 interactive CPW than they can use.
The IBM® recommended
approach to installing an IOP or IOA is to perform the following steps:
- Use the clear non-reporting logical partition resources option to remove
resources that are no longer available, that are listed twice, or that are
no longer on the server.
- Assign empty positions to the partition you want.
- Install the new hardware using the Customer Installable Features information.