If you choose to backup your device to cloud storage, there is only 1 type of backup/scheme format available which is Daily Incremental with single-file backup format.
- A new backup format, in which the initial full and subsequent incremental backups are saved to a single .tib file, instead of a chain of files.
- This format leverages the speed of the incremental backup method, while avoiding its main disadvantage – difficult deletion of outdated backups.
- The backup system marks the blocks used by outdated backups as "free" and writes new backups to these blocks. This results in extremely fast cleanup, with minimal resource consumption. This technology helps to avoid complications in retention/deletion of backups specific to the older formats where either a backup with dependencies on it from subsequent backups can be deleted only when all subsequent backups are due to deletion or a space-consuming consolidation process is required.
One archive is created for each backup plan. Once you assign a new plan to a machine and start the first backup, a new archive is created.
When a certain backup expires due to the pre-defined retention rules, the backup algorithm just marks these outdated backup blocks as “free” ones.
The blocks of expired backups with dependencies (which are needed to restore the newer backups) are not marked as “free” to ensure the archive consistency.
The always incremental archive total size includes the size of the “used” blocks and the size of the “free” blocks: the initial archive still occupies the same space on the storage as before, however all newer backups will be written to the “free” blocks first, and only if all the “free” blocks are filled, the total size of the archive will be increased.
If you choose to backup your device to local folder, network folder or nfs folder, you can have below option:
- Always Incremental with single-file (disk/volume backup for physical/virtual machine only)
- Always Full
- Weekly Full, Daily Incremental
- Custom (Full, Incremental or Differential)
Below diagram show the difference of Full, Incremental and Differential Backups.