You can upgrade existing Site Recovery Manager installations. The Site Recovery Manager upgrade process preserves existing information about Site Recovery Manager configurations.
For information about supported upgrade paths, see http://partnerweb.vmware.com/comp_guide2/sim/interop_matrix.php? before you upgrade.
in the VMware Product Interoperability Matrixes atUpgrading from Site Recovery Manager 6.0.x to Site Recovery Manager 6.5 is not supported. Upgrade Site Recovery Manager to a Site Recovery Manager 6.1.x release before you upgrade to Site Recovery Manager 6.5. See Upgrading Site Recovery Manager in the Site Recovery Manager 6.1 documentation for information about upgrading to 6.1.x.
To revert to Site Recovery Manager 6.1 after upgrading to Site Recovery Manager 6.5, see Revert to a Previous Release of Site Recovery Manager.