I am evaluating the program but i do not see any options to set operations logic.
Specifically i want to do a one-way sync aka mirror but after scanning it needs to delete the files on destination first so it can free up space before it copies.
Also i don't see an option that checks if there is enough free space to destination for the file that is about to be copied.
Of course both could already be handled by the algorithm used. But i cannot find such info.
Example:
unique_file_xyz 100gb Source drive
unique_file_abc 200gb Destination drive, free 80gb, (unique_file_abc does not exist in Source drive anymore)
-If unique_file_abc is not deleted first the operation will fail
-If there is no free space>file size check, we will waste 80gb on writes before failing
You will say a workaround is to have a custom pass first that deletes the data in destination that are not on source. This will require another scanning pass. On big HDD's this could mean another 1-2 hours added + more wear to the drives. Unacceptable.
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Option to propagate deletions first?
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TnF
- Newbie
- Posts: 2
- Joined: Sat Aug 29, 2026 11:57 am
Re: Option to propagate deletions first?
No one has an answer?
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Swapna
- Expert
- Posts: 1051
- Joined: Mon Apr 13, 2015 6:22 am
Re: Option to propagate deletions first?
Hi,
For a Mirror profile, SyncBack handles the deletion and copying operations in the order you described. After the profile has completed its scanning phase and determined which files need to be deleted and copied, it will first delete the files on the destination that are marked for deletion before beginning to copy files to the destination.
Therefore, in your example, unique_file_abc would be deleted from the destination before SyncBack attempts to copy unique_file_xyz. This means that you do not need to create a separate custom pass or perform another scanning operation to achieve this.
Regarding disk space, there is currently no option that can be enabled to check whether there is sufficient free space on the destination for each file before SyncBack attempts to copy it. If there is insufficient space to copy a particular file, the copy operation will fail, but SyncBack will continue processing the remaining files rather than stopping the entire profile run.
Thank you.
For a Mirror profile, SyncBack handles the deletion and copying operations in the order you described. After the profile has completed its scanning phase and determined which files need to be deleted and copied, it will first delete the files on the destination that are marked for deletion before beginning to copy files to the destination.
Therefore, in your example, unique_file_abc would be deleted from the destination before SyncBack attempts to copy unique_file_xyz. This means that you do not need to create a separate custom pass or perform another scanning operation to achieve this.
Regarding disk space, there is currently no option that can be enabled to check whether there is sufficient free space on the destination for each file before SyncBack attempts to copy it. If there is insufficient space to copy a particular file, the copy operation will fail, but SyncBack will continue processing the remaining files rather than stopping the entire profile run.
Thank you.