https://arstechnica.com/information-technology/2017/03/intels-first-optane-ssd-375gb-that-you-can-also-use-as-ram/?amp=1

Blog post from VMware on vSAN performance with Optane.

https://blogs.vmware.com/virtualblocks/2017/03/19/vsan-got-2-5x-performance-increase-thank-intel-optane/