Multi-location Medspas use online tools for large file transfer.
Multi-location medspas often use these types of tools to update multiple locations all at once. They keep the most current copy of the file on a site and each location then downloads the files, ensuring that all the locations are updated with the same information at once. Having used a number of these tools, we've found that www.dropload.com works simply and effectively.
The one caveat is that the file is only available for seven days. The benefit is that it's free.
Other possible solutions are:
Steamload - www.steamload.com - Has a free introductory membership but you'll have to pay to use the usefull features.
Send Your Files - www.sendyourfiles.com - Similar to Steamload but can handle multiple GB files and costs just $29 a year.