When you design a new VDI vSAN you have take licensing into account
Some links about the licensing:
Broadcom describes the vSAN licensing in VVF for VDI, https://ftpdocs.broadcom.com/cadocs/0/contentimages/VVF_VDI_SPD_November2024.pdf
You can find more information also here: Omnissa Horizon combined offering with VMware vSphere Foundation for VDI – FAQ (6000381)
So for this test purpose I have 3 x 3.2TB Storage Drives for test.
Sow I have 9.7 TB storage available in a Single node vSAN Cluster
The 100GB “vSAN” Evaluation License comes from the host license! (Licensed for 50years)
With a 2 x 32 core server I have a total of 64 cores.
With 64 Cores and 100Gb/PerCore license I should not extend more then the raw of 6.4TB.
Wit current raw capacity of 9.6TB I get a error

Alarm is gone after removing 1 Disk from the 9.6 TB vSAN Storage (Left 1 Disk as spare). Storage is now 6.4 TB.
So the conclusion is DON’T go above the RAW Core capacity!!!
For design is the following handy:
Horizon Sizing: The Spreadsheet I Made So I’d Stop Yelling at My Monitor
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