Block-level incremental backup is a feature of BART which is similar to a full backup, but contains only the modified blocks of the relation files that have been changed since a previous backup instead of all, full relation files.

There are certain advantages of Block-level incremental backup as below:

1) The amount of time required to produce an incremental backup is generally less than a full backup, as modified relation blocks are saved instead of all full relation files of the database cluster.

2) An incremental backup uses less disk space than a full backup taken in the plain text format.