Customer has three older Dell hosts, two with E5-2650 0 processors, one with a E5-2640. EVC, with any bridge, will not allow them to create a cluster. On Sandy Bridge, host 1 and 2 show compatible but the E5-2640 does not show any compatible bridge.
Could it be the two main hosts are running 6.5 while the "newer" one runs 6.7?