Hard disk is full, and his size is not changing anymore, even if I delete documents in M-Files (500 Go)

If the vault uses Microsoft SQL Server as the database engine and you store the file data in a file system folder (instead of the vault database), you need to manually run the Optimize Database (Thorough) operation. This is the only way to remove any destroyed files from the file data server in this type of setup.

User guide: Manual Optimization

Thanks Joonas, I will take a look at this.

best regards

Also do note Joonas' use of the word "destroy" vs your use of the word "delete".  These are two different operations; deletion is not sufficient.

Yeah, you're right, I want to say destroy documents in M-Files,

thanks,
Best Regards

 Hello,
I hope you are going well and in good health.

For the Case you said above, it's ok, and it's work with me. But What about if I have a vault uses Microsoft SQL Server as the database engine and for store also !!??

Joonas Linkola 
Craig Hawker 

Thanks,
Best Reagrds.

If the file data is stored in the database, then the space is freed immediately during the destroy operation. However this is not a recommended setup in production use, you should usually have the file data on disk for performance reasons.

Ok,
Thank you Joonas.

Best regards