Forefront TMG and Forefront UAG still need Windows Server 2008 installations. My WSUS servers keeps reporting update KB972493 for all Windows Server 2008 installations on a consistent basis. Which is incorrect, since these machines are not running WSUS or anything at all. There are clean retail installations, so the mistake must be in the update detection logic.
I found that Jeremy Jameson has the same issue also and created an computer group for the servers and then declined the update for that computer group.
In Windows 8 the disk performance counters are visible by default in the Task Manager. On Windows Server 2012 they are disabled by default. To enable them, execute the command:
Configure Disk Performance Counters using diskperf.
Although the help says that a restart of the system is required, it works directly after restarting the Task Manager application:
Disk Performance Counters Enabled on Server 2012R2
A handy shortcut to quickly start the Task Manager is CTRL+SHIFT+ESC.
More information on the source of the Disk Performance Counters can be found in the Microsoft Documentation.