Hello,
What is the Generation for the server if it's a Gen8 or newer you can use the ILO and AMS software. I believe that since the 5.x versions of ESX you need to install the ESX agent here : http://h20566.www2.hpe.com/hpsc/swd/public/detail?sp4ts.oid=4194639&swItemId=MTX_a1830a1bd584493eaa27e14a7c&swEnvOid=4115
This package will enable you to discover and poll the server using a root like account. SMH is depricated since the 5.x version.