Steve's (unofficial) vSAN Sizing:

vSAN Cluster / Node Information
# of Nodes (Cluster Size):  
# of Disk Groups:  
Cache Drive Size (GB):  
Capacity Drives per Disk Group / Size (GB):  
Capacity Drive Size (GB):  
De-Dupe / Compression Multiplier:  
Server (compute) Information
# of CPUs:  
# of Cores:  
GHz / Core:  
RAM (GB):  

Virtual Server(s) - %
Small Server Tier - (2vCPU, 4GB, 75 IOPs): Large Server Tier - (6vCPU, 16GB, 400 IOPs):
Average Server Tier - (4vCPU, 8GB, 200 IOPs): X-Large Server Tier - (8vCPU, 32GB, 750 IOPs):