Where are MetaShare's documents stored?
The documents in MetaShare are not stored in MetaShare, they are stored in Microsoft SharePoint, a component of Microsoft Office 365. MetaShare only presents data from SharePoint in a user-friendly interface. If you at any time choose to uninstall MetaShare, all documents, their metadata and their access-rights will remain intact in SharePoint.
The Administrator of your Office 365 decides where the documents geographically are stored. When activating Office 365, you will automatically be suggested to store your information in the nearest Microsoft data center. If your business operates mainly in Europe, the recommendation is to choose storage within EU. This can later be changed if you are an Office 365 administrator.