Create OSDX file for Windows Server 2008 R2 Search

I have  Windows 2008 R2 fileserver (~7TB of data) with Search Services running and many Win7/Win8 clients.

How do I create the OSDX file for the index on the Windows Server to distribute to my desktops so they can use the Server's index's can be used when searching for files on network shares?

I'm probably saying this incorrectly, but in the end what I want is for the desktops to use the Server's index when searching for a file on the file server instead of trying to do a brute force search via SMB on the mounted filesystem.

Any help or pointers are greatly appreciated!