Understand how to clean up your server prior to upgrading
your server.
Perform the following tasks to clear the server from
unwanted resources and disk units:
- Perform device configuration cleanup as follows:
- Use the Work with Line Descriptions (WRKLIND) command
to view and delete unused lines and line descriptions.
- Use the Work with Device Descriptions (WRKDEVD) command
to delete unused device descriptions.
Note: You can use these commands to view and verify that all
of the descriptions listed are in use. If you are sure one is not
in use, delete it. If you are not sure, you should leave it.
- Assign all unassigned I/O resources to active logical partitions
if your server is partitioned. See Dynamic movement
of logical partition resources for more information.
- Remove failed or non-reporting resources that are no longer
associated with existing hardware. Do so for each logical partition
if your server is partitioned. See Removing failed or nonreporting resources for more information.
- Logically remove any configured disk units that will be
removed during the upgrade.
For information, see the
"How to Remove a Disk Unit from an Auxiliary Storage Pool" in the
chapter Working with Auxiliary
Storage Pools of the Backup and Recovery Guide.
Note: Disk
units that are not physically removed might be inadvertently added
back into the configuration when you restart the server.