The Revit Indexing Service deeply indexes Revit family files, including family parameters and objects, so that you can search Revit family files with the Revit Vault Add-in. This feature must be enabled before you can search Revit family files.
Once the Revit Plug-in for Vault Professional (Server) package is installed, you can enable the Revit Indexing Service.
Enable Revit Indexing with the ADMS Console
You can also select Revit Indexing Service from the Actions menu.
You can now use Revit Family Search on the Load from Vault dialog.