Zerto Virtual Replication and VMware Features : Protecting Virtual Machines in a vApp
  
Protecting Virtual Machines in a vApp
A VMware vApp is a resource container for multiple virtual machines that work together as part of a multi-tier application. vApps provide a method for setting power-on options, IP address allocation and resource allocation, and provide application-level customization for all the virtual machines in the vApp. When you configure a vApp in vSphere you specify properties for it, including CPU and memory resources, IP allocation, application information, and start order.
You protect the each virtual machines in a vApp individually in Zerto Virtual Replication.