Stream distribution across multiple backup hosts
No additional options are available to enable multi-host backup of a NAS share. NetBackup automatically determines when to use multiple hosts based on the number of streams specified in the D-NAS policy. Note the following:
If the policy specifies fewer than 20 streams, NetBackup uses a single host to back up the NAS share.
If the policy specifies 20 or more streams, NetBackup distributes the backup streams evenly across an optimal number of hosts. Any host ready to start backup streams is included automatically.
To optimize host resource usage, NetBackup starts at least ten backup streams on each host.