+[[vzdump_jobs]]
+Backup Jobs
+-----------
+
+[thumbnail="screenshot/gui-cluster-backup-overview.png"]
+
+Besides triggering a backup manually, you can also setup periodic jobs that
+backup all, or a selection of virtual guest to a storage. You can manage the
+jobs in the UI under 'Datacenter' -> 'Backup' or via the `/cluster/backup` API
+endpoint. Both will generate job entries in `/etc/pve/jobs.cfg`, which are
+parsed and executed by the `pvescheduler` daemon.
+
+[thumbnail="screenshot/gui-cluster-backup-edit-01-general.png", float="left"]
+
+A job is either configured for all cluster nodes or a specific node, and is
+executed according to a given schedule. The format for the schedule is very
+similar to `systemd` calendar events, see the
+xref:chapter_calendar_events[calendar events] section for details. The
+'Schedule' field in the UI can be freely edited, and it contains several
+examples that can be used as a starting point in its drop-down list.
+
+You can configure job-specific xref:vzdump_retention[retention options]
+overriding those from the storage or node configuration, as well as a
+xref:vzdump_notes[template for notes] for additional information to be saved
+together with the backup.
+
+Since scheduled backups miss their execution when the host was offline or the
+pvescheduler was disabled during the scheduled time, it is possible to configure
+the behaviour for catching up. By enabling the `Repeat missed` option (in the
+'Advanced' tab in the UI, `repeat-missed` in the config), you can tell the
+scheduler that it should run missed jobs as soon as possible.
+
+[thumbnail="screenshot/gui-cluster-backup-edit-04-advanced.png"]
+
+There are a few settings for tuning backup performance (some of which are
+exposed in the 'Advanced' tab in the UI). The most notable is `bwlimit` for
+limiting IO bandwidth. The amount of threads used for the compressor can be
+controlled with the `pigz` (replacing `gzip`), respectively, `zstd` setting.
+Furthermore, there are `ionice` (when the BFQ scheduler is used) and, as part of
+the `performance` setting, `max-workers` (affects VM backups only) and
+`pbs-entries-max` (affects container backups only). See the
+xref:vzdump_configuration[configuration options] for details.
+