How to save (a little) space on Windows Servers

On our virtual Windows servers, there is really no need for hibernation, so why not disable it. This will free up the space of the hibernation file, which will be the same size as the memory installed. Type the following in cmd.exe as Administrator:
powercfg -h off

Windows keeps shadow copy and assembly caches in c:\windows\winsxs and the folder will grow to 10Gb and more. To limit this, run the following command as Administror in cmd.exe
vssadmin resize shadowstorage /for=C: /on=C: /maxsize=2GB