not sure what you mean. if you go with Gea's linked board you could get 64GB with 4 16GB ddr4 modules.@gigatexal
Not going that route.
Just looked and i need min. 64gig memory, but limits me to 32 on each right (they dont share?)
Might need to source some used, because new is 235 euro pr 16 gig....
As for SSDs you could have 6 Sata spindles on the SAS controller and the same controller two SSDs in raid1 for the VMs. Just get some big SSDs, they're cheap now something like < 30Cents a gig.