As many request come in on the comparison between vSphere Replication vs Array-based Replication, I've decided to write this blog based on vSphere Replication 5.5 and Array-based Replication. Feature SRM vSphere Replication Storage array-based replication Replication Component Hypervisor-level Storage-level Storage at recovery site Does not need to match active site, support on local disk as well. Must be the same array type as the active site Supported storage types Any Storage that is supported by vSphere 5.5 ISCSI, Fibre Channel and NFS, as long as supported by VMware. Check Compatibility here . Integration with Site Recovery Manager (SRM) Yes Yes, as long as supported by VMware. Check Compatibility here . Cost Low. vSphere Replication is included in vSphere hypervisor and work with any storage, including local disk. High. It is normally sold as an option on top of SAN box. Additional to that, you must purchase the similar box, at least the same firmware that support t