I'm trying to find out whether VMware ESX 4.x Fault Tolerance (FT) is supported on a particular server and VMware's HCL is confusing me. It says that some servers with FT-supported processors (specifically the Xeon 3400 Lynnfield) do not support FT and some with almost identical specs (same chipset for instance) do support FT. Could this be a mistake on the HCL itself? To my understanding FT support is based only on the CPU. Thanks. RC