Synthetic Full Backup (legacy backup format)
Synthetic full backup is a type of subsequent full backup that makes a comparison to the previously backed up data on the storage and uploads only modified block of data from source to a backup storage. Synthetic full backup helps to reduce the amount of data uploaded and accelerates a full backup creation.
How Synthetic Full Backup Works
The first (initial) backup is always a full backup of selected dataset. Synthetic full backup is an advanced way to perform subsequent full backups.
Running a full backup from time to time is advised for all backup types.
Synthetic full backup works as follows:
- Checks if any parts of files on the backup storage (i.e. already uploaded) correlate to those you are about to upload
- Copies that existing data inside the storage to generate a new full backup
- Uploads only new blocks of data from computer to the backup storage
Synthetic Full backup type is supported for:
- Image-Based Backup
- Storage providers:
- Amazon S3