Running Backup twice a day at specified times

Hi everyone,

I have already been searching and reading a lot about other posts referring to my problem but I haven’t found a solution yet. I apologize to you, English isn’t my native language so I may have missed one or the other post due to a poor choosing of search phrases.

I have been trying to backup an entire c: drive (Windows) twice a day through the Duplicati.CommandLine.exe and the Windows Task Scheduler once around 10:30 in the morning and at 15:00 in the afternoon.

The way I understand how Duplicati works is that the first backup is a full backup of the selected drive/folder etc. and after that only incremental backups follow thus only saving the changes.

When I run my CMD-script via the task scheduler at the above mentioned times I get 2 full backups - one for 10:30 and one for 15:00. It seems like I would have created two Backup Jobs via the GUI at 2 different times.
Is it possible to run a backup twice a day and saving it as one backup job?
I hope I could clarify what my issue is.

My CMD looks like this:

"C:\Program Files\Duplicati 2\Duplicati.CommandLine.exe" backup "file://F:\Test\\" "C:\\" --backup-name="Backup C" --dbpath="C:\Users\<USER>\AppData\Local\Duplicati\LIQGNTEGVB.sqlite" --backup-id=DB-9 --encryption-module= --compression-module=zip --dblock-size=50mb --retention-policy="1W:1D,4W:1W,12M:1M" --no-encryption=true --exclude-files-attributes="temporary,system,hidden" --disable-module=console-password-input

Thanks in advance for any input, hints and filling the blanks in my head.

Welcome to the forum @Fabian

What do you see that suggests this? What does destination size do? I doubt it’s doubling.

Yes, but it needs a regular interval, e.g. 12 hours apart (unlike your example).

More flexible is using Task Scheduler to run ServerUtil to run a single GUI job.

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