Naleendra,
This is a question to Prime folks, here we'd deal with UCS and vmware compatibility.
That being said, quick google search away I found this for prime 2.1
http://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/infrastructure/2-1/quickstart/guide/cpi_qsg.html#99048
This seems to indicate ESX 5.5 is not among the supported by prime 2.1.
M.