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The vSAN ESA documentation in VCF 9.0 explains that auto-policy management dynamically selects the most efficient data placement policy based on cluster size. For RAID-6 (erasure coding with double parity), the minimum required host count is 6. The docs state:

“RAID-6 (Erasure Coding with FTT=2) requires a minimum of six hosts in a vSAN ESA cluster. This ensures that data and parity components can be distributed across unique failure domains.”

With fewer than six hosts, RAID-6 cannot be enforced and auto-policy management will fall back to RAID-1 mirroring. RAID-6 in vSAN ESA provides higher storage efficiency but comes with stricter host count requirements. Options 2 and 4 are far below requirements, while 8 provides more redundancy but is not the minimum. Therefore, the correct minimum number of hosts for RAID-6 with ESA is 6.

The VCF 9.0 Deployment Guide states:

“Each new VCF instance requires its own management domain consisting of vCenter Server, NSX Manager cluster, and SDDC Manager.”

vCenter (A) is required to manage ESXi hosts and clusters.

NSX Manager (D) provides software-defined networking for the instance.

SDDC Manager (E) is the lifecycle and management component central to each VCF instance.

Supervisor (B) is optional and only enabled if Kubernetes workloads are required. VCF Automation (C) is a separate solution, not part of the core instance bring-up. VCF Installer (F) is the deployment tool, not a persistent component. Thus, the correct components to deploy are vCenter, NSX Manager, and SDDC Manager.