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Storage for Versioned documents

  Asked By: Greggory    Date: Apr 22    Category: Sharepoint    Views: 1133

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?



1 Answer Found

Answer #1    Answered By: Monte Cooley     Answered On: Apr 22

1. All content is stored  for each version. SharePoint doesn’t keep deltas because it doesn’t know how to read the files  it stores (other than pulling out properties). It also has no way to really tell if you put a .txt file  in that it’s text and could generate deltas

2. There are some migration tools (DocKit for example) that maintain  history when moving from doclib to doclib. Nothing out of the box again. Also check out Trace from InfoTecch Canada which modifies your doclibs and adds functionality for copy, paste, etc. live (rather than a tool to do it offline)

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