Deltas and Changes
Learn about how Movebot handles Deltas and changed files.
Keeping Your Data Up to Date
In active environments, it’s common for files to be added or updated during a migration. Movebot’s Delta Migration feature helps keep your destination up to date by copying only the files that have been added or modified since the last transfer.
How Delta Migrations Work
Delta Migrations compare the source and destination using each file’s modification time (modtime). Only files that are new or have a more recent modtime on the source will be transferred. This reduces duplication and speeds up the process by skipping files that haven't changed.
Important: Movebot does not delete or move files at the destination
If you rename files or move them to a new directory in the source, Movebot will see them as "new" files. This means that they won't be moved in the destination, and instead will be migrated again.
If you delete files at the source, a delta migration will not delete them in the destination.
To avoid duplication or confusion, we recommend avoiding major restructuring during the migration process.
Running a Delta Migration
Delta Migrations increase scan time, but reduce transfer time by focusing only on what’s changed.
You can only launch a Delta Migration after your Full Migration run. To do this:
Open your project.
Select the transfer(s) you want to run a Delta for.
Click Run Action.
Choose Start Delta Migration.
We recommend running a Delta Migration for your Cutover to catch files that were created or updated since your Full Migration. You can also run a Delta Migration to resolve certain errors. See further information on this at Failures and Errors.
Running a delta migration as your initial transfer
If you already have content in your destination tenant because of user access or a partially-completed migration, you may want to start with a Delta Migration instead of a Full Migration.
In this scenario, you can enable the "Include only Changed Files/Objects" setting. This setting forces Delta Migrations and uses the delta migration process outlined above for all transfers. To force Delta Migrations across all runs:
Go to Step 4 in your project settings.
Enable the “Include only Changed Files/Objects” option.
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