Hi! With regards to local DICOM directory upload, we currently do not support uploading directories due to directory upload not yet being a browser standard. We do support selecting a list of multiple *.dcm files and displaying the volume, and a *.zip containing dcm files. That being said, if you target most recent versions of browsers (this means no IE), Glance can be extended to add a separate DICOM directory upload.
Remote directory in DICOM storage server is possible, but not currently implemented. Glance will have to be extended to support that scenario.