You must configure replication on the virtual machines that you want to protect. Site Recovery Manager supports two types of replication technologies, array-based replication and vSphere Replication. Array-Based Replication Versus vSphere Replication You can replicate virtual machines by using either array-based replication, vSphere Replication, or a combination of both. You cannot use both the replication technologies to protect the same virtual machine. Using Array-Based Replication with Site Recovery ManagerWhen you use array-based replication, one or more storage arrays at the protected site replicate data to peer arrays at the recovery site. With storage replication adapters (SRAs), you can integrate Site Recovery Manager with a wide variety of arrays. Using vSphere Replication with Site Recovery ManagerSite Recovery Manager can use vSphere Replication to replicate data to servers at the recovery site. Using Array-Based Replication and vSphere Replication with Site Recovery ManagerYou can use a combination of array-based replication and vSphere Replication in your Site Recovery Manager deployment.