Full and incremental backups
yes, this is correct. When you run file backup (and that is the only option available in Backup for Linux) there is currently no way to make CloudBerry re-backup everything that has not changed.
Our Backup is incremental whether you use Block Level option or not.
According to the schedule, it will sometimes upload...
... Full versions of files.
These are the exact copies of what the file was before backup. Like really just a copy, byte to byte.
...Block versions of files.
These are the delta (or the sum of changes) between the latest Full version and the current state of the file.
What we call "incremental" in this context is this - if a file has had 0 changes between its latest Full version and now (during the backup) - this file will not be re-uploaded to the storage
If you have Block Level Backup enabled and a Full Schedule configured you will not need to go through months of incremental versions of files.
The restore process will pick the latest Full version and apply any Block versions to it if needed.