I plan on deploying a cluster of 2 ESXi/vSphere servers and having them run in fault tolerance mode. The virtual servers primarily be IIS & SQL. The physical servers will have a single Xeon E5-2697 (2.7Ghz 12 Core) CPU, 64GB RAM and dedicated network controllers for ESXi FT communication. Assuming these virtual servers were running at a maximum load, how much bandwidth would be required for the ESXi FT to keep the redundant node in lockstep with the primary node? Would a 1 Gbit ethernet connection be adequate, or should I use 10 Gbit ethernet instead?