Both vSAN Ready Nodes and VxRail appliances reach similar user densities when configured similarly, as shown during this validation. Remember to use VxRail sizing tools to reserve resources for management tools when designing your VDI infrastructure.
The configurations for the VxRail appliances and vSAN Ready Nodes have been optimized for VDI. We selected the memory and CPU configurations that provide optimal performance. You can change these configurations to meet your own requirements, but keep in mind that changing the memory and CPU configurations from those that have been validated in this document affects the user density per host. We applied mitigatons to the Spectre and LT1F vulnerabilities during the validation.
With the introduction of the six-channels-per-CPU requirement for Skylake, and now Cascade Lake, the Density-Optimized memory configuration recommendation has increased from the previous guidance of 512 GB to 768 GB. This change was necessary to ensure a balanced memory configuration and optimized performance for your VDI solution. The additional memory is advantageous, considering the resulting increase in operating system resource utilization and the enhanced experience for users when they have access to additional memory allocations.