This VMware vSAN design is limited to the consolidated cluster. The design uses the default storage policy to achieve redundancy and performance within the cluster.
VMware vSAN Conceptual Design
You can use vSAN and traditional storage in the consolidated cluster. Because of the nature of the Consolidated SDDC design, you can scale the Consolidated SDDC out to a dual-region Standard SDDC. In this case, the consolidated cluster becomes the shared edge and computer cluster. However, this design currently gives no guidance on the implementation of traditional storage. For more information on the dual-region Standard SDDC, see VMware Validated Design for Software-Defined Data Center.
vSAN Logical Design
In a cluster that is managed by vCenter Server, you can manage software-defined storage resources just as you can manage compute resources. Instead of CPU or memory reservations, limits, and shares, you can define storage policies and assign them to virtual machines. The policies specify the characteristics of the storage and can be changed as business requirements change.