I would like to setup a VMware vSAN hybrid in my homelab, by using 3 nodes having 32 EPYC cores each.

Each node has 10 spinning SAS disk 10k of 900GB each, then I have some SSD like PM983 of 960GB, and of course I could by other SSD as needed.

The amount of VM is quite limited: around 20VM running at the same time: the largest one is around 50GB.

The requested failure to tolerate (FTT) is 1 (maxium allowed with only 3 nodes).

I'm uncertain about how to divide the spinning disks in disk group. I'm thinking to the following options:

- 2 disk group with 4 hard disk and 1 ssd each (leaving out 2 hard disk as spare, 6 hard disk spare in total, 6 ssd required); or
- 2 disk group with 5 hard disk and 1 ssd each (no spare, 6 ssd required); or
- 3 disk groups with 3 hard disk and 1 ssd each (leaving out 1 hard disk as spare, 3 hard disk spare in total, 9 ssd required).

the second solution does not provide spare disks so I should buy at least a couple of more hard disk;

the first one works, but maybe 6 hard disks as spare is too much.

What is your opinion ? Any suggestion ?

Thanks in advance!