I have today started up a Windows Server 2012 Foundation Server. It has never been used before and I realize that there will be quite a few update to install.
Pretty much since I started the server there has been lots of disk activity. One time when I restarted the server it said that updates had failed to install and that the system was reverting back - or words to that effect.
Now on the window update screen it says that it is downloading 152 updates. It has been sat there for 2 hours and is still at 0%.
There is still lots of disk activity.
In resource monitor it suggests that TiWorker.exe and SYSTEM processes are responsible for most of the disk activity.
They both seem to be accessing c:\windows\softwaredistribution\downloads and other folders continuously.