Figure 87 Protect > Backup > Add Job: Step 1 - ZyXEL Communications NSA-2401 User Manual

Chapter 3 Tutorials
2 Identify the backup job and select Archive.
New files are often added to the shares that you need to back up and existing files are not
frequently changed so select Incremental. The NSA does a full backup first and later
only copies source files that are new and/or modified since the last backup. This example
sets the NSA to do another full backup after every four incremental backups.
Figure 87 Protect > Backup > Add Job: Step 1
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NSA-2401 User's Guide