Cleaning up server hardware

Understand how to clean up your server prior to upgrading your server.

1. Perform device configuration cleanup as follows:
   1. Use the Work with Line Descriptions (WRKLIND) command to view and delete unused lines and line descriptions.
   2. 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.
2. 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.
3. 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 the Removing failed or nonreporting resources topic for more information.
4. Clear non-reporting logical partitioning resources by completing the following steps:
   1. Access dedicated service tools (DST) on the primary partition, while all secondary partitions are active. Sign on to DST.
   2. From the DST main menu, select option 11 (Work with system partitions), and then press Enter.
   3. From the primary partition's console, select option 4 (Recover configuration data).
   4. Select option 4 (Clear non-reporting logical partitioning resources), and then press Enter.
   5. To confirm the deletion of non-reporting resources, press F10 (Clear non-reporting resources).
5. 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.