A customer has an HPE SimpliVity Federation based on VMware. The customer wants to add self-service catalogs that users can use to establish services built on the SimpliVity cluster. Provisioning services will require workflows that include tasks, including cloning VMs and creating datastores.
Is this a way to achieve this goal?
Deploy vRealize Automation, vRealize Orchestrator, and the HPE plug-in for vRA.

You need to help a customer add VMware NSX to a data center which has HPE FlexFabric switches. Each server rack is served by two FlexFabric switches in an IRF stack. The IRF stacks connect to a FlexFabric spine in a leaf-spine architecture. Switch-to-switch links are routed, and the network uses OSPF.
Is this how the customer's needs can be met?
The physical infrastructure should use OSPF to communicate routes with the NSX ESGs.

Is this how the Composable Fabric handles traffic at Layer 2?
If the traffic does not match an affinity, forward the traffic on a path calculated for such traffic.

Is this a requirement for using the grow cluster feature in HPE OneView for vCenter (OV4VC)?
Cluster members have Advanced licenses for OneView.

Is this how the Composable Fabric handles traffic at Layer 2?
It uses MAC forwarding table to find the correct forwarding port.