Refer the following steps to determine the vCPU-to-core ratio:
- Determine the number of vCPUs that are required, as follows:
vCPUs per Workload x Number of Workloads Per Host = Number of vCPUs Required
- Determine the vCPU-to-core ratio based on the CPU utilization of the workloads. If the workloads are CPU-intensive, the vCPU-to-CPU-core ratio will be lower; for less CPU-intensive workloads, the ratio will be higher. The ratio of 4:1 is generally a good starting point for server workloads.
- Calculate the number of CPU cores that are required to support the vCPU-to-CPU-core ratio:
Number of vCPUs / vCPU-to-core ratio = Number of Cores Required