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Settings for incremental back to external hard drive

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Hi, please provide information on how to set up my laptop to do incremental back up to external hard drive, I can only find full back up.  Thank you.

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Douglas, welcome to these user forums.

All the information that you need can be found in the ATIH 2017 User Guide.

See section: Backing up data for the general outline of the different data you can backup.

See section: Backup schemes for how to make an incremental backup of your data

With an incremental backup scheme, please understand that EVERY file that forms this scheme is required in order to recover data from the backup, so if you create a very large incremental scheme with say 100 files - all 100 files must be available for a successful recovery of the latest data.  If even 1 file is missing, the chain is broken at that point and only earlier data can be recovered.   For this reason, the default settings for an incremental backup are to create a new full backup after creating 6 incremental files, thus keeping the chain length to just 7 files then starting over.