A snapshot can be created to preserve the state and data of the virtual machines in a vApp at a point in time. Snapshots are meant to be used temporarily, for example prior to upgrading a VM, and do not replace regular vApp backups. https://docs.vmware.com/en/VMware-Cloud-Director/10.2/VMware-Cloud-Director-Tenant-Portal-Guide/GUID-7A29C3F9-0074-43D6-AB06-F29600191CB4.html