Disk Read IO Throttle not showing in perfmon Windows Server 2012 r2 I am working on Windows Server 2012r2,SQL Server 2014. 

I am trying to create a new data collector to review Disk IO in perfmon. When I get to the step to add the available counters there is no Disk Read IO Throttle per sec in the list to be added.

I did see it in screenshots in other web resources. Is there a way to add it in the perfmon so that it appears as a counter?
What you are referring is not related to windows. It's for *NIX systems.

For windows, you should monitor 

•\LogicalDisk\Avg. Disk Sec/Read 
•\LogicalDisk\Avg. Disk Sec/Write 
•\LogicalDisk\Disk Bytes/Sec 
•\LogicalDisk\Disk Reads/Sec 
•\LogicalDisk\Disk Writes/Sec 
•\LogicalDisk\Split IO/sec 
•\LogicalDisk\Disk Transfers/sec

You can use PAL to analyze the .blg file for any bottlenecks.

Check : http://blogs.technet.com/b/cotw/archive/2009/03/18/analyzing-storage-performance.aspx