Deployment Server allows you to use Serial Number, Asset Tag, UUID, and MAC Address as the Primary Lookup Key (Computer Identification). How can I know which one I should use?
If you choose a Primary Lookup Key that is identical on two or more of your computers or if that key is missing on any of your computers, Deployment Server will not be able to identify them. To identify which Primary Lookup Key is best, open SQL Query Analyzer, select to the Deployment Server database, and run the attached PrimaryLookupKey.sql file against the Deployment Server database. The result will tell you which keys have duplicate computers and which ones don't. It will also show you which keys have duplicates.