For cumulative incremental backups using Amazon RDS SQL
You can protect Amazon RDS SQL database assets with a NetBackup protection plan or policy. You can use both full and cumulative incremental backup schedules.
Backup and restore of TDE Certificates on RDS instances with Multi-AZ (Multi-Availability Zone) deployments is not supported directly on the RDS instance.
To backup TDE certificates, disable Multi-AZ on the instance temporarily, and enable it after the backup is complete.
To restore user TDE certificates, disable Multi-AZ on that instance temporarily, and enable it after the restore is complete.
You cannot disable the automated backups when Multi-AZ is enabled on the RDS instance.
Automated backups occur daily, during a user-configurable 30-minute window. These backups create more frequent requirements for full backups. A full backup runs at least once a day if the cumulative schedule comes after the automated backups.
You can restore a full backup to Multi-AZ instance in the recovery mode only.
Cumulative incremental backups can only be restored to an RDS instance in a single availability zone.
Whenever a cleanup of backup history is performed either by calling the
sp_delete_backuphistoryAPI or by the Amazon maintenance window, the subsequent backup falls back to a full backup.When you perform a full backup of an Amazon RDS SQL Server asset using a different policy, the subsequent cumulative backup in the current policy is treated as full backups. This happens because the new full backup updates the
backupset IDof the last full backup, causing the cumulative backup in the current policy to lose its reference point and run as a full backup instead.