WebDAV and Windows : In Windows the WebDAv protocol is limited to a maximum file size of 4 GB. All WebDAV clients in Windows such as Cyberduck and WinSCP have this limitation. See the section about file size
Speeding up the upload of large set of small files: In case you want to add a large set of small files (in the order of thousands) to a collection or a project, please pack your data in a zip or tar archive and upload the package. This will tremendously reduce the operation time. Currently, you can only unpack the data inside the RDMS via icommands.
Please contact us if you have any questions by sending an email to rdms-support@rug.nl.