How to create a differential backup

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Jan 21, 2019

Backup4all Professional/Standard 7.x, 6.x, 5.x

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How to create a differential backup

This article shows how to create a differential backup of the given sources to a specified destination using Backup4all. The current method can be extended to other sources and destinations supported by Backup4all.

On this page:

The differential backup type will create a full back up on the first execution, then only differentials will be performed (all new and modified files since the last full backup execution). It will create a new zip file in the destination with the backup sources from each source drive.

How to configure a differential backup job

  1. Press the New button in Backup4all to open the New Backup Wizard. Type a name for the backup job, choose a tag and add a description (optional). Press Next to continue.
    Differential - New job
  2. Choose where do you want to save your backup (the backup destination) and click on Next.
    Differential - Destination
  3. On this page you can add the backup sources by pressing the Add folder and Add files buttons. When ready, press Next
    Differential - Sources
  4. Select the Differential backup type and decide if you want to encrypt the backup files or not. Press Next if you want to schedule the backup or Save to finish creating the backup job.
    Differential - Type

Backup execution examples

We will perform several backup executions to see what we get in destination.

  1. As we have sources from C and D drive, after the first backup execution, we get in destination a zip file for each source drive: 1_C.zip and 1_D.zip
    Differential backup - 1
  2. For the second backup execution we will add a new folder called 03 in backup sources from the D: drive.
    Differential backup - 2
  3. After the 2nd backup execution we get in destination: 2_D.zip which is the second backup version, containing only folder 03.
    Differential backup - 3
  4. For the third backup execution we will change an existing source file on C: drive.
    Differential backup - 4
  5. After the 3rd backup execution we get in destination: 3_C.zip and 3_D.zip which is the third backup version, containing all new and modified files since the last full: the modified file on C: drive and the 03 folder from D drive.
    Differential backup - 5