Excerpted from Apple Pro Training Series: OS X Server Essentials 10.9: Using and Supporting OS X Server on Mavericks by Arek Dreyer and Ben Greisler
Once you’ve completed your initial installation of OS X Server, the Server app opens its main configuration pane and you can continue configuring it. You can administer your server on your server computer, but it’s not recommended to use your server for your daily productivity applications. You can use the Server app on any Mac with Mavericks to manage OS X Server running on a remote Mac, but only if the checkbox “Allow remote administration using Server” is selected in the Settings pane of the Server app. Note: When you select the “Allow remote administration using Server” checkbox, you enable other Macs to use the Server app to configure your server, using TCP port 311.
Caution: It is recommended that you do not simultaneously use the Server app on more than one Mac to administer a given server.
Unlike in earlier versions of Mac OS X Server, in Mavericks you cannot perform a remote initial installation of OS X Server with the Server app; instead, you have to use the Server app on the Mac on which you want to install OS X Server, at least for the initial installation and configuration.
Sometimes you need direct control of your server computer; for example, to perform a series of file or folder copy operations by using the Finder. If you select the checkbox “Enable screen sharing and remote management” in the Settings pane, you can use tools such as Screen Sharing (available from the Tools menu in the Server app, and located in /System/Library/CoreServices) and Apple Remote Desktop (available from the Mac App Store) to take control of the Mac running OS X Server.