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Bacula FD
Bacula File Daemon (FD) is a component of the Bacula network backup solution, responsible for managing backup and restore operations on client machines. Operating over both TCP and UDP, it enables secure and efficient data transfer between clients and server controllers within the Bacula ecosystem..
Bacula File Daemon (FD) is part of the Bacula open-source enterprise network backup solution, primarily designed to handle backup, recovery, and verification of data across heterogeneous networks. The FD component specifically resides on client machines, where it coordinates the reading and writing of file data during backup and restore jobs, in communication with the Bacula Director and Storage Daemon.
The Bacula FD listens on port 9102 for incoming instructions from the Bacula Director. It accepts authenticated commands instructing it to either send client data for backup or receive data for restoration. The communication typically involves TCP for reliable delivery of backup streams and control messages, while UDP can be optionally used for lightweight status updates or notifications in some configurations.
Designed to support multiple platforms, Bacula FD handles large data transfers efficiently, with capabilities such as compression, encryption (when enabled), and checksum validation. This modular architecture separates control from data handling, improving manageability, scalability, and flexibility for complex enterprise backup environments.