# Start synchronisation comparison (with specified criteria) with single button

**URL:** <https://resource.dopus.com/t/start-synchronisation-comparison-with-specified-criteria-with-single-button/26159>\
**Category:** Help & Support\
**Created:** [June 17, 2017, 5:13pm UTC](https://resource.dopus.com/t/start-synchronisation-comparison-with-specified-criteria-with-single-button/26159 "2017-06-17T17:13:02Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Inigo](https://resource.dopus.com/user_avatar/resource.dopus.com/inigo/32/26958_2.png) [@Inigo](https://resource.dopus.com/u/Inigo)\
**Post date:** [June 20, 2017, 1:27pm UTC](https://resource.dopus.com/t/start-synchronisation-comparison-with-specified-criteria-with-single-button/26159/4 "2017-06-20T13:27:41Z")

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Having tried this on an FTP server I've found that it unfortunately doesn't work quite as I expected; for some reason running a copy filter from a local folder to an FTP server seems to cause the filter to also run against the files on the web server which takes ages. I hadn't realised this before.

[I've opened a new topic which addresses this](https://resource.dopus.com/t/using-copy-filter-to-upload-to-ftp-server/26181).

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_[View the full topic](https://resource.dopus.com/t/start-synchronisation-comparison-with-specified-criteria-with-single-button/26159)._