You size resources and storage for the vCenter Server Appliance to provide enough resources for accommodating the expected number of management virtual machines in the SDDC.

Table 1. Resource Specification of the Consolidated vCenter Server Appliance



vCenter Server version

6.5 (vCenter Server Appliance)

Physical or virtual system

Virtual (appliance)

Appliance Size

Small (up to 100 hosts / 1,000 VMs)

Platform Services Controller


Number of CPUs



16 GB

Disk Space

290 GB

Table 2. Design Decisions on vCenter Server Appliance Sizing

Decision ID

Design Decision

Design Justification

Design Implication


In each ROBO, deploy a vCenter Server Appliance of a small deployment size.

Based on the number of management and workload virtual machines that a ROBO deployment runs, a vCenter Server Appliance installed with the small size setting is sufficient.

A small vCenter Server deployment supports up to 100 hosts or 1,000 virtual machines, which is more than a ROBO is designed for.