monitoring Dell servers running ESXi 5.5 using SCOM 2012 R2

Hi,

What's the best way to monitor Dell servers (eg. PowerEdge 750, 1950, 2950, R310, R610), running VMWare ESXi 5.5, using SCOM 2012 R2 ?

We have the Dell Management Pack 5.1 installed on SCOM 2012 R2.  Through SCOM, we're monitoring our Dell Windows servers with OMSA, but none of the VMWare servers yet.

Thanks