Product : VMware, Site Recovery Manager/8.2, Enterprise
Feature : Host/Server Scalability, Scaling, Design & Deploy
Content Owner:  Herman Rutten
Summary
Array-based: N/A
VR: Unknown (VRAg,VFD); 200 VMs (VRR)
Details
The vSphere Replication Agent (VRAg) and the vSCSI Filter Driver that are installed at the source site do not have any documented maximums.

However, each of the vSphere Replication Servers (VRR) installed at the target site can protect a maximum of 200 VMs.