Worldload domains#

RPC-V uses VMware Cloud Foundation as the infrastructure deployment and lifecycle management platform, and therefore deploys a VMware Validated Design (VVD). Central to the VVD is the concept of a Workload Domain (WLD), which is a way to divide the software-defined data center (SDDC) into separate tenants. Each WLD has dedicated vCenters, NSX managers, and NSX controllers, but all WLDs in the same SDDC are joined together by using Enhanced Linked Mode, and therefore achieve a single pane of glass in the vCenter Console.

Workload domain use-cases#

There are multiple use-cases for WLDs, such as running different types of service on each (such as VDI), achieving a higher degree of tenant separation compared to using clusters, and being able to patch different parts of the SDDC independently.

Workload domain architecture#

The first WLD deployed in an SDDC is known as the Management Domain and runs all management components for all WLDs in the SDDC. All other WLDs are known as Infrastructure Workload Domains and only contain customer VMs.

The default architecture of RPC-V is a consolidated SDDC where management VMs and customer VMs share a single WLD by using separate vSphere Resource Pools. This architecture enables four-node clusters. Rackspace also allows customers to add additional WLDs to their SDDC. Such an architecture requires at least seven ESXi hosts, where the first four are dedicated to the management WLD, and a minimum of three hosts are for an Infrastructure WLD.