The virtual appliance for VSC, VASA Provider, and SRA uses VMware-recommended, web-based architecture. The virtual appliance consists of two major components:
You can use the VMware vSphere Web Client to access VSC. Each VSC instance and VASA Provider instance must be registered with only one
vCenter Server instance. Each SRA instance must be registered with Site Recovery Manager (SRM), which must be registered with
vCenter Server.
The vSphere Web Client and any plug-in applications that are deployed in the
vCenter Server use the HTTPS protocol to communicate with each other.
The vCenter Server instance communicates with the physical servers where the ESXi hosts are running. You can have multiple
virtual machines running on the ESXi hosts. Each
virtual machine can run an operating system and applications. The ESXi hosts then communicate with the storage systems. You can use the virtual appliance for
VSC, VASA Provider, and SRA to enable the VASA Provider extension and the SRA extension. If you want to configure virtual volumes (VVols), then you must enable the VASA Provider extension. If you want to configure disaster recovery for your
vCenter Server environment, you must enable the SRA extension. While configuring the disaster recovery setup, you must install the SRA plug-in on the SRM instance that is installed in your
vCenter Server. Depending on what tasks you want to perform, you can enable or disable the required extensions by using the interface of the virtual appliance for
VSC, VASA Provider, and SRA.