The differences between a Full, Incremental, or Differential backup

NovaBACKUP
Last Updated: Dec 15, 2014 06:48AM PST
Full Backup: In the NovaBACKUP Client, this option is for a complete back up of all files selected in their entirety.


Example: Folder C:\Photos contains seven photos:
 
On the first day of full backups, the following files are backed up:
                       
C:\Photos\Img_0001.crw
C:\Photos\Img_0002.crw
C:\Photos\Img_0003.crw
C:\Photos\Img_0004.crw
C:\Photos\Img_0005.crw
C:\Photos\Img_0006.crw
C:\Photos\Img_0007.crw
 
On Day 2 you edit the following photos:
 
C:\Photos\Img_0003.crw
C:\Photos\Img_0006.crw
 
On Day 3 you edit the following photos:
 
C:\Photos\Img_0001.crw
C:\Photos\Img_0002.crw
C:\Photos\Img_0007.crw
 
 

Note: This would only be possible for the files that are selected; any files that are not selected will not be backed up.


Incremental Backup: In the NovaBACKUP Client, this option is for backing up the changes to the full backup at file level.

Example: 

With an incremental backup you will end up with the following files:

Day 1 File - Full backup (Contains all 7 images)
Day 2 File - Contains only files changed since Day 1 (Img_0003.crw & Img_0006.crw)
Day 3 File - Contains only files changed since Day 2 (Img_0001.crw & Img_0002.crw & Img_0007.crw)
 
Note: This would only be possible for the files that are selected; any files that are not selected will not be backed up.


Differential Backup: In the NovaBACKUP Client, this option is for backing up file level changes but the file size keeps growing every day.

Example: 
With a differential backup you will end up with the following files:

Day 1 File - Full backup (Contains all 7 images)
Day 2 File - Contains all files changed since Day 1 (Img_0003.crw & Img_0006.crw)
Day 3 File - Contains all files changed since Day 1 (Img_0001.crw & Img_0002.crw & Img_0003.crw & Img_0006.crw & Img_0007.crw) 
 
The next time you perform a "Full" backup the "all files changed since Day 1" date will reset. 

To restore files from Incremental and Full backup, the user would need the Full and every Incremental backup for that period. For a Full and Differential restore the user would only need the Full Backup and the last Differential backup.
 

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