I seem to constantly get into discussions with companies about how they should manage their file names and part numbers, but there is usually never a clear cut best practice. Usually different approaches are needed for multiple document types, and this usually leads to confusion in most environments. Once a naming convention is decided, the File Naming tools in Vault Workgroup or Collaboration 2010 can be used to ensure each new CAD document has a unique file name.
This tool can be configured in the Administrative Options area:
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