Increasing the number of vCenter Server instances in your vRealize Orchestrator setup causes vRealize Orchestrator to manage more sessions. Too many active sessions can cause vRealize Orchestrator to experience timeouts when more than 10 vCenter Server connections occur.

For a list of the supported versions of vCenter Server, see the VMware Product Interoperability Matrix.

Note: If your network has sufficient bandwidth and latency, you can run multiple vCenter Server instances on different virtual machines in your vRealize Orchestrator setup. If you are using LAN to improve the communication between vRealize Orchestrator and vCenter Server, a 100-Mb line is mandatory.