Online backups happen frequently, and without stopping the server. For online
backups, you need to back up only the database.
About this task
Because the database data is more important for deployments to run than the file
system data, online backups typically include only the database and not the server file
system and application data directory. Use the backup options for your database
system.
Note: To make the online backups easier to restore, configure your database to
create full regular restore points and to enable transaction logging. For example, the
database might make full backups once a month and log transactions all the time. That way,
you can restore the database at any time.