This section describes what In-file delta technology is and how it can be used to reduce size of backup
[No. of delta] defines the maximum number of deltas allowed for each full file (within the backup set) before the OBM will force a full file upload to the backup server. For example, if the [No. of delta] is set to 10, and the corresponding file already has 10 deltas saved on the backup server. On the next backup, the OBM will upload the full file instead of generating a delta since the [No. of delta] is reached. This setting is to ensure that there will be a full file backup after a certain number of deltas has been generated (limiting the size of the delta chain). Alternatively, to configure the OBM to allow "infinite" number of deltas, you can configure the [No. of delta] setting to "-1".