The RANDOMIZATION parameter sets randomized start times within the startup window of each schedule for clients by using the client-polling scheduling mode1. A startup window is the start time and duration during which a schedule must be initiated. The RANDOMIZATION parameter does not affect other scheduling modes such as server-polling, client-prompted, or server-prompted.

https://www.ibm.com/docs/en/spectrum-protect/8.1.2?topic=commands-set-randomize-set-randomization-scheduled-start-times

According to IBM documentation1, one of the considerations when setting the number of parallel, database backup streams with the SET DBRECOVERY command is that each stream requires its own volume. The device class that is specified for automatic backups must have enough volumes to accommodate the number of streams that are specified. If there are not enough volumes available, some streams might fail.

This means that, by default, files from different clients are grouped together in storage pool volumes to optimize space utilization. This information is available in the IBM Spectrum Protect for AIX [1]: Administrator's Reference, which is one of the official documentation resources for this product.

https://www.ibm.com/docs/en/spectrum-protect/8.1.14?topic=storage-optimizing-operations-by-enabling-collocation-client-files

The command used to copy data in directory-container storage pools to tape in IBM Spectrum Protect is the "COPY STGPOOL" command.

According to the IBM documentation, the "COPY STGPOOL" command creates a copy of the data in the specified storage pool on a different storage pool, such as a tape storage pool. This command is typically used to create a backup copy of the data in the storage pool in case the original copy is lost or becomes corrupted.

https://www.ibm.com/docs/en/spectrum-protect/8.1.0?topic=pool-copying-directory-container-storage-pools-tape

According to IBM documentation1, SCHEDMODE prompted enables the scheduler to process the client deployment schedule immediately. SCHEDMODE prompted can be used with the autodeploy option to start a backup operation as soon as a new client node is registered.

Schedmode - IBM Documentation

According to the IBM Spectrum Protect documentation1, one command that defines or deletes all drives and their paths for a single library in one step is PERFORM LIBACTION with SANDISCOVERY=ON. This command performs a SAN discovery operation on a SCSI or VTL library and automatically defines or deletes all drives and paths that are associated with the library.

https://www.ibm.com/docs/en/spectrum-protect/8.1.7?topic=commands-define-drive-define-drive-library