Does editing columns, or adding new columns, in a document library actually consume version/size?

Question

I have a document library (MOSS 2007) with Major versions, 5 versions, turned on.

I recently added a new column to the library - it happens to be a lookup from another List if that matters.

When I Edit Properties of an existing document, and add my new column data, I see a new Major Version created.

My Question: does this actually consume new space in the back end. So if I have a 100KB Word Document uploaded, and now add my column, from the Version History page it looks like there are now two 100KB-consuming versions of the document.

Or is it smart enough to not duplicate the actual document, but merely the new column meta-data?

Thanks

Answer 1

It will create a new copy and thus consume more space. Sharepoint versioning is dumb in that regard, it doesn't store a diff, it stores a new copy of the document.