# Automatic Backup Plan Schedules and Associated Conversion Rules

Backup schedules are created based on your selections when you create a backup plan. These schedules are automatically converted to full backup schedules based on backup conversion rules.

## Generic Schedule

This table lists the schedules that are created automatically based on your selections when you create a backup plan. For more information, see Creating a Backup Plan. To modify the schedules, you can modify the backup plan settings.

Schedules | Backup Plan settings | Agents | Expected run time
--- | --- | --- | ---
Synthetic full | In the Add copy dialog box, the Retention period, Extended Retention rules, and Backups to copy. Note Each backup serves as a full recovery point for compliance and regulatory purposes. For disk and cloud storage, synthetic fulls function as a garbage collection process and do not create new recovery points. | All agents that support synthetic full backups | Based on a combination of the rules associated with the primary storage copy. The rules are as follows: The number of days that should pass between automatic synthetic full backups. The number of days that should pass between synthetic full backup jobs based on the storage policy’s extended retention rules defined by the user. Whenever there is a possibility to reclaim more than 50% space from the backed up media of the subclient’s latest cycle. For more information, see Adding an Automatic Synthetic Full Backup Schedule to a Schedule Policy. Based on the extended retention and selective copy settings in storage policy copies. For more information, see Configurations for RPO.
Incremental | In the RPO section, the Backup frequency setting is every 1 day (default value). | All agents | Based on backup RPO settings.
Continuous backup copy | In the Snapshot options section, the Backup copy frequency setting is 4 hours (the default value). Note Backup plans created with default RPO for backup copy will be associated to the system generated backup copy schedule policy. If the RPO for backup copy is modified, then a new backup copy schedule policy is created with the backup plan name. | All agents that support snap backups | Based on backup RPO settings.
Incremental automatic for logs | In the Database options section, the Log backup RPO setting is 4 hours (the default value). Note Only the SQL server databases that use the full recovery model are eligible for automatic log backups. | All database agents | Every 4 hours. If the volume of the log files are more than the 80% threshold limit, then the archive log backup will run sooner than the default 4 hours schedule.

## Agent-Specific Schedule

This table describes the conversion rules where incremental and synthetic full backup schedules are converted into a full backup schedule.

Schedule | Agents | When incremental backups are converted to full backups
--- | --- | ---
Continuous incremental backup | Amazon Web Services Azure SQL | Converts to a full backup 24 hours after the most recent full backup on the subclient.
Continuous/daily/weekly incremental backup | IBM Db2 IBM Informix MySQL Oracle Database Oracle RAC PostgreSQL SAP HANA SAP Sybase | Converts to a full backup 7 days after the most recent full backup on the subclient.
Daily/weekly incremental backup | SQL Server | Converts to a full backup seven days after the most recent full backup on the subclient or if the size of the differential backup is 75% or more than the size of the most recent full backup. Note The differential backups will only run once every 24 hours, even if you update the incremental backup schedule to run more frequently.
Daily/weekly incremental backup | Amazon Web Services Azure SQL Amazon RDS for PostgreSQL/Aurora PostgreSQL Amazon RDS for MySQL/MariaDB Azure PostgreSQL Azure MySQL Google Cloud SQL for PostgreSQL/AlloyDB Google Cloud SQL for MySQL Alibaba Cloud ApsaraDB RDS for PostgreSQL Alibaba Cloud ApsaraDB RDS for MySQL | Converts to a full backup.
Daily incremental and synthetic full | Salesforce | The synthetic full backup converts to a full backup every 90 days.
System Created Continuous Incremental Backup | DynamoDB | A continuous backup schedule is configured to run every 12 hours. If no backup is performed within 20 hours after the most recent incremental backup, the next incremental job is converted into a full backup.

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