This parameter is used to override the default setting for the password associated with the Tivoli® Storage Manager (TSM) product.
The password is needed to allow you to restore a database that was backed up to TSM from another node.
The default is that you can only restore a database from TSM on the same node from which you did the backup. It is possible for the tsm_nodename to be overridden during a backup done with DB2.