Features on Demand
The server roles and features needed are copied to C:\windows\WinSxS after installation.
Features on demand: enables you to remove these files and free up the disk space.
Benefit:
- better system performance
- faster windows update
Keep in mind that you can not remove the files from a feature you want to remain installed, it removes features you aren’t currently using.
If you want to display features that are installed:
get-windowsFeature | where installstate -eq installed
Display features that no longer have installation files in C:\windows\WinSxS : replace installed with removed.
Display features that are in the C:\windows\WinSxS, but not currently installed: available
Feature file store: is a network share containing the files required to install roles, features. Simply create a network share and give read permissions to everyone group, then copy the sources\SxS folder from installation Medium to the shared folder.
Upgrade your windows edition
If the installation DVD is in the D drive:
dism.exe /get-wiminfo /wimfile:d:\sources\install.wim
Index : 1
Name : Windows Server 2012 SERVERSTANDARDCORE
Description : Windows Server 2012 SERVERSTANDARDCORE
Size : 7,195,580,708 bytes
Index : 2
Name : Windows Server 2012 SERVERSTANDARD
Description : Windows Server 2012 SERVERSTANDARD
Size : 11,999,848,937 bytes
Index : 3
Name : Windows Server 2012 SERVERDATACENTERCORE
Description : Windows Server 2012 SERVERDATACENTERCORE
Size : 7,176,243,455 bytes
Index : 4
Name : Windows Server 2012 SERVERDATACENTER
Description : Windows Server 2012 SERVERDATACENTER
Size : 11,995,224,677 bytes
These correspond to:
- Standard Core (with optional GUI features removed)
- Standard (all features except .NET 3.5. present)
- Datacenter Core (optional GUI features removed)
- Datacenter (all features except .NET 3.5. present)
http://blogs.technet.com/b/server_core/archive/2012/11/05/using-features-on-demand-with-updated-systems-and-patched-images.aspx
how to add local source media to add role and features.