It is recommended that you associate each consolidation with one of the three hardware profiles. The hardware profiles can be used to calculate how many of each profile the host servers can handle by dividing the total CPU, RAM, and I/O capacity of the hosts by the desired mix of guest hardware profiles and the quantity of each.
Benchmark the Host and Guest Server Architecture
Benchmarking of the server‘s maximum sustained CPU, RAM, Disk I/O, and Network I/O should be performed. Benchmarking provides much more accurate numbers to utilize in the sizing formula while also providing early warning of any serious component or configuration problems. If the performance benchmarks do not meet expectations, careful review of all hardware, software, and configuration should be performed.