Vault folder structure

Seems companies are either Product based or Project based. Most of the example of the file vault I've seen are project based. Since we are Product based, just curious what are some typical vault layouts for companies that are Product based.

Anyone care to post some screen shots or describe what kind of folders structure they use?

  1. Do you separate purchased parts/drawings from product parts/drawings?
  2. Do store drawings and models in the same folder or separate?
  3. Do store all file types (Acad, Swx, ProE, etc) that represent drawings in one folder?
  4. Where do you store ECO documentation, under the product or at the root level?
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