A new version of DNNGlobalStorage (the first and original DotNetNuke 6 folder providers solution) was released. 

FREE up to 50 files or 250 Mb of DNNGlobalStorage space (Windows Azure, Amazon S3 and FTP).

DNNGlobalStorage expands your DotNetNuke 6 storage options beyond your Web Server, enabling a 100% integrated way to have your files wherever you want.
It is a set of folder providers which allows the integration of special, external, and cloud based file systems out of the box. For example: Windows Azure, Amazon S3, Dropbox, and an FTP location.
In next releases will be added support for Box.Net, Google Storage, Rackspace CoudFiles, etc.

Major highlights

• Easy to integrate into your DotNetNuke 6+ Installation (it is a set of DotNetNuke folder providers).
• This is the first and original product, where the ideas come from.
• Allows core and 3rd party modules to utilize externally-persisted files (on Amazon S3, Dropbox, etc.) without any modification.
• You can connect your site to different sources of files, even of the same kind. E.g. you can have many different Windows Azure (on different subscriptions/containers), Amazon S3 (each one to different buckets), Dropbox connections (each one to different Dropbox accounts), or many different FTP connections.
  
  
• Click here to find out more.