Before deploying Cloud Foundation, you must ensure that your environment has enough available compute and storage resources to accommodate the footprint of the management domain, any additional workload domains, and any optional components you plan to deploy.
Use the VMware Cloud Foundation Capacity Planner to assist you in identifying hardware to match your capacity requirements. See https://vcf-planner.cfapps.io/.
Storage footprint shows allocated space. Do not consider it if you use thin provisioning.