This section is relevant only in situations for sharing vSAN data store resources over the network.
With an HCI Mesh topology, the local vSAN datastore on a VxRail cluster can be shared with other VxRail clusters. This storage sharing model is applicable only in a multi-cluster environment where the VxRail clusters are configured under a common data center object on a common VMware vCenter Server instance.
With a vSAN HCI Mesh network, the VxRail cluster that leverages a local vSAN datastore for primary storage can also leverage the capacity on a remote vSAN datastore for application workload. If dynamic clusters are to be part of the vSAN HCI mesh network, they can mount a remote vSAN datastore on a cluster with free vSAN storage capacity and use that as their primary storage resource.
- Two Ethernet ports on each node in the cluster will be configured to support vSAN network traffic.
- A common VLAN can be assigned to this vSAN network on each cluster so they can connect over a Layer 2 network. This method is preferable if the client cluster does not have a local vSAN datastore. If a common VLAN is assigned, and the VxRail clusters are deployed against different sets of ToR switches, the VLAN must be configured to stretch between the set of switches.
- If a unique VLAN is assigned to the vSAN network on each cluster, then connectivity can be enabled using Layer 3 routing services. If this option is selected, be sure to assign routable IP addresses to the vSAN network on each participating VxRail cluster.
- A VMware vCenter Server instance at a version that supports VxRail 7.0.100 or later.
- A VMware vSAN Enterprise license for each VxRail cluster using VMware vSAN HCI mesh topology.
If your plans include sharing the VMware vSAN resources of a VxRail cluster with one or more VxRail dynamic clusters, meet the following prerequisites:
- A VMware vCenter Server instance at a version that supports VxRail 7.0.240 or later.
- A VMware vSAN Enterprise license is needed only for the VxRail cluster that is sharing its VMware vSAN storage resources. This license is not needed on a dynamic cluster because it does not have a local VMware vSAN datastore.
If your plans include sharing the VMware vSAN resources from a VxRail stretched cluster, meet the following prerequisites:
- The VxRail cluster participating in the vSAN HCI mesh topology must be running VxRail 8.0.100 or later.
- The VMware vCenter Server instance that supports the VxRail clusters must be running at a version that supports VxRail 8.0.100.
- The VMware vSAN datastore being shared is based in the OSA.
The VxRail client cluster can consist of:
- Dynamic nodes with no local VMware vSAN datastore.
- VxRail cluster with a local VMware vSAN datastore using the remote stretched VMware vSAN datastore as secondary storage.
- VxRail cluster with a stretched VMware vSAN datastore using the remote stretched VMware vSAN datastore as secondary storage.