Allocate resources with guardrails. Always a good thing to let other help themselves without allowing them to destroy the whole environment.
VMware can be found at http://www.vmware.com/.
Data Services Manager (DSM) is DB-as-a-Service for your private cloud. This should be interesting.
https://www.youtube.com/live/s5-IOk3y12Q
https://www.linkedin.com/video/live/urn:li:ugcPost:7437888157393743872/

You can go up to 4:1 ration of disk-to-RAM. Probably for very low usage devices.
VMware can be found at http://www.vmware.com/.
The VMware presentation is streaming on YouTube as well as LinkedIn.
https://www.youtube.com/live/s5-IOk3y12Q
VMware can be found at http://www.vmware.com/.

Scale memory capacity using NVMe along with DRAM to achieve memory tiering.
VMWare can be found at http://www.vmware.com/.