NetBackup host IDs and host ID-based certificates
Each host in a NetBackup domain has a unique identity, which is referred to as a host ID or a Universally Unique Identifier (UUID). The host ID is used in many operations to identify the host. NetBackup creates and manages host IDs as follows:
Maintains a list on the master server of all of the host IDs that have certificates.
Randomly generates host IDs. These IDs are not tied to any property of the hardware.
By default, assigns NetBackup 8.1 and later hosts a host ID-based certificate that is signed by the NetBackup certificate authority.
The host ID remains the same even when the host name changes.
In some cases a host can have multiple host IDs:
If a host obtains certificates from multiple NetBackup domains, it has multiple host IDs that correspond to each NetBackup domain.
When the master server is configured as part of a cluster, each node in the cluster receives a unique host ID. An additional host ID is assigned for the virtual name. For example, if the master server cluster is composed of N nodes, the number of host IDs that are allocated for the master server cluster is N + 1.