I’m curious about how SharePoint stored multiple versions of documents when version control is turned on. For each new version, does it save an entire copy of the document, or just a delta file, containing the differences from one version to the next? In other words, if I open up a 1 MB document, change one word, and save it as a new version, will there be 2 files that are 1 MB each, or just one that is 1 MB, and a second that is just a few bytes of data?
Also, does anyone know of a way to move a set of documents from one document library to another, and still maintain the version history for each of the documents?