# Reference Technical specifications and architectural details for backup charms serve as authoritative look-up material when configuring, extending, or integrating the charm. ## Charm configuration and operations Operators control charm behavior through configuration options and Juju actions. Here are the configuration and day-to-day operation related to the Bacula charms. * [Actions](https://canonical.com/juju/docs/backup-charms/latest/reference/actions/index.html.md#reference-actions) * [Configurations](https://canonical.com/juju/docs/backup-charms/latest/reference/configurations/index.html.md#reference-configurations) * [Integrations](https://canonical.com/juju/docs/backup-charms/latest/reference/integrations/index.html.md#reference-integrations) ## Charm architecture and designs Components and dependencies within the Bacula charms, along with the architecture decisions made during charm creation. * [Backup charm architecture](https://canonical.com/juju/docs/backup-charms/latest/reference/architecture/index.html.md#reference-architecture) * [Backup integrator charm architecture](https://canonical.com/juju/docs/backup-charms/latest/reference/architecture/backup-integrator-charm-architecture/index.html.md#reference-backup-integrator-charm-architecture) * [Bacula server charm architecture](https://canonical.com/juju/docs/backup-charms/latest/reference/architecture/bacula-server-charm-architecture/index.html.md#reference-bacula-server-charm-architecture) * [Bacula file daemon charm architecture](https://canonical.com/juju/docs/backup-charms/latest/reference/architecture/bacula-fd-charm-architecture/index.html.md#reference-bacula-fd-charm-architecture)