https://technet.microsoft.com/en-us/library/dn879084(v=exchg.150).aspx Direct link to Performance Counters https://technet.microsoft.com/en-us/library/dn904093(v=exchg.150).aspx
Tag: performance
Performance and Threshold Counters for Exchange Server 2010
http://gallery.technet.microsoft.com/Performance-and-Threshold-d32ff5a6