You can achieve the higher levels of availability, fault tolerance and disaster recovery in vRealize Business for Cloud through vCenter Server and Site Recovery Manager.
vRealize Business for Cloud does not have an in-built high availability or fault tolerance capabilities. However, you can deploy vRealize Business for Cloud appliances on the HA clusters managed by a vCenter Server and can enable fault tolerance for the appliance to provide additional protection.
In case of any site level failures, you can migrate the vRealize Business for Cloud appliance (as any other virtual machine) and power-on the appliance on a secondary site using Site Recovery Manager.
For more information, see vCenter Server and Site Recovery Manager documentation.