How to Install Lion Server
Whether you’re creating your first Lion Server or upgrading or migrating an older Mac OS X server, the basic installation procedure for Lion Server for most installations is as follows:
Download the Lion client installer from the Mac App Store.
Immediately after download concludes, the installer launches.
Quit the installer immediately; do not proceed.
If you continue with the installation now, the installer will delete itself during the process. If something goes wrong with the installation, you’ll have to download the whole 4GB again.
Copy the installer (which is a file called Install Mac OS X Lion) from the Applications folder to a DVD, USB flash device, or other storage device.
Launch the installer and proceed through the process of installing the client.
When the client installation is finished, go to the Mac App Store and download the Lion server component.
The server installer launches after downloading.
Run the server installer.
After installation, configure the server (set up Open Directory, add users, and so on).
The procedure is shorter if you’re installing on a blank volume while booted from Snow Leopard or Lion Server. In this case, you can skip Steps 5, 6, and 7 because you’ll see a setup assistant that further automates the configuration of the server to your specifications.