The NetBackup Resource Broker binary (nbrb) is a service that starts when NetBackup starts and remains active. This service makes the allocations for such things as storage units, tape drives, and client reservations. This service works closely with the EMM to obtain physical and logical the resources that a job requires to run. Physical resources can be storage units, tape drives, and media IDs. Logical resources can be named resources, max jobs per client, max jobs per policy, and multiplexed groups as resources that nbjm uses.