By using a method we support
- of your choice / after testing.
Note that you would need to specify what you mean by 'delta' - if you mean 'at the file level' (only copying changed parts of files), this isn't supported. We always copy the entire file. If you mean 'only changed files' this is the default (there is in fact no way to set it to re-copy identical files) provided that the method you choose supports setting the Destination file properties as 'same as Source' and reporting them accurately thereafter.

Note that you would need to specify what you mean by 'delta' - if you mean 'at the file level' (only copying changed parts of files), this isn't supported. We always copy the entire file. If you mean 'only changed files' this is the default (there is in fact no way to set it to re-copy identical files) provided that the method you choose supports setting the Destination file properties as 'same as Source' and reporting them accurately thereafter.