This section describes what In-file delta technology is and how it can be used to reduce size of backup
[Delta Ratio] defines the maximum 'ratio of change' (delta file size when compare to the last backup) before the OBM forces a full file upload to the backup server. Delta ratio is calculated by dividing the file size of a delta by the file size of the full file (e.g. the percentage of changes detected between the last full backup file and the current file). For example, if the [Delta Ratio] is set to 50% (default setting), if a file changes by more than 50%, the OBM will upload the full file instead of generating a delta since the [Delta Ratio] is reached. This setting is to ensure that a full file backup is performed for file with significant changes, as it is preferable to upload a full file instead to reduce the time required to restore the file.