Methods and apparatus to transfer physical hardware resources between virtual rack domains in a virtualized server rack are disclosed. An example method includes determining, using a processor, a subset of candidate hosts that includes a host capacity that meets a first threshold, the candidate hosts belonging to a first virtual rack domain; determining, using the processor, whether the first virtual rack domain will meet an operating requirement of the first virtual rack domain if the subset of the candidate hosts is removed from the first virtual rack domain; and when the first virtual rack domain will meet the operating requirement if the subset of the candidate hosts is removed from the first virtual rack domain, transferring the subset of the candidate hosts from the first virtual rack domain to a second virtual rack domain.