VxRail is dependent of specific data center services to implement the cluster and for day-to-day operations. The top-of-rack switches must be configured to the upstream network to enable connectivity to these data center services, and to enable connectivity to the end-user community.
Domain Naming Services (DNS) is required to deploy the VxRail cluster and for ongoing operations.
VxRail cluster depends on Network Time Protocol (NTP) to keep the clock settings on the various VxRail components synchronized. Dell Technologies recommends that a reliable global timing service be used for VxRail.
VxRail depends on VMware vCenter for cluster management and operations. You can use either the embedded vCenter instance that is included with VxRail, or an external vCenter instance in your data center.
Figure 4. Connecting data center services with VxRail cluster
VxRail cluster operations depend on a set of networks that run on both the virtual network inside the cluster and on the adjoining physical network switches. Some of these networks, specifically for VxRail management and for end-user access must be passed to the upstream network, while other VxRail networks stay isolated on the adjoining network switches.
You must specify a set of Virtual LAN (VLAN) IDs in your data center network that will be assigned to support the VxRail networks. All the VLANs must be configured on the adjoining physical switches. The VLANs that need to pass upstream must be configured on adjoining network switch uplinks, and also on the ports on the upstream network devices.
One VLAN is assigned for external VxRail management access. Data center services (such as DNS and NTP) that are required by VxRail cluster must be able to connect to this VLAN. Routing services must be updated to enable connectivity to these services from this VxRail management network. Additional VLANs, such as those required for end-user access must also be configured in routing services to connect end-users to the virtual machines running on the VxRail cluster.