OS X Server: Caching the OS X Yosemite installer

To cache the OS X Yosemite installer, stop and restart the Caching service in OS X Server.

The OS X Yosemite installer is Mac App Store content, which is cached by the Caching service in OS X Server (Mountain Lion) and later. You need to stop and restart the Caching service in order for local clients to use your cached copy of this installer.