docs: automatic database backups

docs/docs/administration/backup-and-restore.md

@@ -21,6 +21,17 @@ The recommended way to backup and restore the Immich database is to use the `pg_
 It is not recommended to directly backup the `DB_DATA_LOCATION` folder. Doing so while the database is running can lead to a corrupted backup that cannot be restored.
 :::
 
+### Automatic Database Backups
+
+Immich will automatically create database backups by default. The backups are stored in `UPLOAD_LOCATION/backups`.  
+You can adjust the schedule and amount of kept backups in the [admin settings](http://my.immich.app:2283/admin/system-settings?isOpen=backup).  
+By default, Immich will keep the last 14 backups and create a new backup every day at 2:00 AM.
+
+#### Restoring
+
+We hope to make restoring simpler in future versions, for now you can find the backups in the `UPLOAD_LOCATION/backups` folder on your host.  
+Then please follow the steps in the following section for restoring the database.
+
 ### Manual Backup and Restore
 
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