We are running OS X Server 5.0.15 on a Mac Mini running OS X 10.11.1. Caching is working well for OS and iOS devices on our local network. I expected the caching server to cache a copy of the El Capitan OS 10.11 upgrade installer, but the server has not cached the upgrade after several laptops have requested the installer from the App Store. Is this expected behavior? Does the caching server not cache these major upgrades? Thanks for any insights.
Mac mini, OS X El Capitan (10.11.1), OS X Server 5.0.15