Gireesh,
I have confirmed that Performance Advisor is collecting all of the counters you listed.  However, when I attempt to add the pa_concurrency counter to a chart, its still shown in italics.  When I move my mouse over the counter it states "...(Data collection currently disabled).".   What am I missing that enables the pa_concurrency counter in OnCommand 5.0?  My controllers are all ONTAP 8.1RC2.