You need to regularly back up your operating system and database to restore the SAP system, if required.
To use an appropriate back up and restore method is one of the most important tasks of the system and database administrator. However, there is no general recommendation for such a method, since it depends on several factors, such as:
Disaster recovery concept
Maximum permissable downtime during restore
Amount of data loss that is tolerable
For information on operating system-specific backup and recovery procedures, see one of the following sections:
For information on database-specific backup and recovery procedures, see the database administration guides available in the Database Administration section: