vSphere Cluster Service VMs - 7.x

The vSphere Clustering Service (vCLS) is a new capability that is introduced in the vSphere 7 Update 1 release. It’s first release provides the foundation to work towards creating a decoupled and distributed control plane for clustering services in vSphere.

The challenge being that cluster services, like the vSphere Distributed Resource Scheduler (DRS), depend on vCenter Server availability for its configuration and operation. And while there’s ways to increase availability for vCenter Server, think about vSphere High Availability (HA) and vCenter Server High Availability (VCHA), its dependency is not ideal. Also, when thinking about vCenter Server scalability in large on-prem and public clouds, we need a better solution to support clustering services. That’s why vCLS is introduced. In the first release, a subset of DRS capabilities is already using the new vCLS feature.

Host or Publisher Rob Thomas