Sync/Mirror
Keep a destination matched to a source — including removing destination files that no longer exist in the source. Powerful, and worth understanding before you schedule it.
Last updated July 17, 2026
#What Sync/Mirror does
Sync/Mirror makes the destination match the source. On each run it copies new and changed files to the destination and removes destination files that no longer exist in the source. It's available on Team plans and above and is ideal for replicas, published folders, and warm standby copies.
#Understand the delete behavior
Sync/Mirror deletes at the destination. Anything present at the destination but not in the source will be removed so the two match. If you reverse source and destination, or point at the wrong folder, the wrong files can be deleted.
If you only want to add or update files and never delete at the destination, use Copy instead. Reserve Sync/Mirror for when you genuinely want the destination to mirror the source.
#How to use it safely
- First run it in Copy mode against a scratch destination and confirm the file set.
- Verify the source and destination are not reversed.
- Make sure anything valuable at the destination is backed up or covered by Archive.
- Switch to Sync/Mirror, run once manually, and review the run detail before scheduling.
#If something was removed unexpectedly
If Sync/Mirror removed files you wanted, restore them from your backup or from Archive if it was enabled, then switch the job to Copy or Move. See Files moved incorrectly for recovery steps.