Backups

A backup can be started by either the scheduler on the master server or a request from a client. The following figure shows the connections that occur for a client-requested backup. A scheduled backup works the same way, except there is no client request.

Backup Port Connections

The table Connections for Backups describes each connection and defines the ports that NetBackup uses:

• For registered ports, the table shows the port number (for example, 13720).
• For dynamically-allocated ports, the table indicates Reserved (port numbers less than 1024) or Nonreserved (port numbers greater than 1024). Some bpcd connections are shown as Reserved or NonReserved, depending on the allow non reserved port setting.

In addition to the ports in the Backup Port Connections figure and Connections for Backups table, the master and media server can have connections to robotic control daemons (tl8cd and so on). See the services file on the computers that share the tape library for those port numbers.