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What are some good de-dup tools for SharePoint? I tried a powershell method but it doesnt do what it said it do. http://blog.pointbeyond.com/2011/08/24/finding-duplicate-documents-in-sharepoint-using-powershell/

It does not find any MS Office documents. I purposely added bunch of office docs (word, excel, ppt, etc.) with different name but same contents. I heard SP properties takes over the file properties of office and therefore md-5 hash fails.

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What do you need the script to do that it isn't doing? –  Tim Gabrhel Nov 18 '11 at 6:23
    
@TimGabrhel: It does not find any MS Office documents. I purposely added bunch of office docs (word, excel, ppt, etc.) with different name but same contents. I heard SP properties takes over the file properties of office and therefore md-5 hash fails. –  Mary Rivers Nov 18 '11 at 16:53
    
A comment on the blog article itself highlights that office documents, when stored into different document libraries will not be picked up due to Sharepoint overwriting certain properties. –  user5954 Dec 8 '11 at 10:42

2 Answers 2

Not a de-dup tool as such but a script that will allow you to get an inventory output to another source that you can query/filter to find duplicates:

http://blog.falchionconsulting.com/index.php/2010/08/getting-an-inventory-of-all-sharepoint-documents-using-windows-powershell/

I've used this and found it reasonably handy. A developer could probably take this solution further.

Chris

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Chris is not that simple. We are talking about actual contents of the file. MD-5 is the way to go but it fails for Office documents as SP takes over the file properties of the file. –  Mary Rivers Nov 18 '11 at 18:59

I recently had somebody ask me something about identifying duplicate files. I was convinced this would be pretty easy to do in search, but could not find any way to globally identify duplicates and found that the Duplicates keyword property requires a specific item url.

I ended up writing up a full blog post with all of my findings here: Finding Duplicate Items and The Duplicates Keyword

In the end it looks like the best option is to alter the PowerShell script by Gary referenced previously, and execute a duplicates search for each document, logging any of the duplicates found.

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