Better Edge Backup v5.2
User Guide
Copyright © 2008, Better Edge Technology, Inc. All Rights Reserved.
Page 57 of 121
(September 16, 2008)
8.2 Block Size
The block size defines the size of data block being used to detect the changes between the last full or delta
backup file and the file sitting on the local computer right now. In general, the smaller the block size, the more
likely a matched data block can be found between the last backup file and the file on local computer. It, therefore,
produces a smaller delta file but it would require more processing power to detect these changes. On the other
hand, in-file delta backup running with larger block size will run faster but this will generally produce a larger delta
file.
In most case, the default setting [Auto] will choose the optimal block size for each file (depending on the size of
the file) for you.
8.3 Minimum File Size
The [Minimum File Size] setting defines the smallest file size a file must have before the use and application of in-
file delta backup technology.
If the size of a file that is being backed up is smaller than the [Minimum File Size] setting, in-file delta backup
technology won’t be applied to this file and the whole file, instead of just the delta file, will be uploaded to the
backup server. It is not necessary to perform in-file delta backup on small files because backing up the whole file
doesn’t take too long anyway. Backing up the whole file instead reduces the time required to restore a backup file.
8.4 Uploading full file again
No. of Delta
The [No. of delta] setting defines the maximum number of delta files from the same full backup file to be
generated and backed up to the backup server before a full backup (the whole file) of this file is uploaded to the
backup server instead.
For example, if you have created 100 delta files from the full backup file already and the [No. of delta] setting is
set to 100, the next backup will upload a full backup file (the whole file) instead of just the delta file. However, if
the [No. of delta] rule is disabled, it will keep generating delta files and uploading these delta files to the backup
server until the other delta rule forces a full backup (i.e. delta ratio exceeded). This setting is here to make sure
that there will always be a full backup file after a certain number of delta files have been generated.
