Consolidation planning involves determining the number of Hyper-V servers required to support the candidate server workloads. The number of required Hyper-V servers depends on defined virtualization candidate groups. These groups can define physical location, administration and security strategy, and application constraints. After you have defined virtualization candidate groups, you can start the analysis process to determine the virtualization candidate workload combinations that generate the highest consolidation ratio. Then, when you have defined the workload combinations, you can look into which virtualization candidate hardware may be repurposed as Hyper-V servers.