+
+# Hypervisor constants
+HT_XEN_PVM30 = "xen-3.0"
+HT_FAKE = "fake"
+HT_XEN_HVM31 = "xen-hvm-3.1"
+HYPER_TYPES = frozenset([HT_XEN_PVM30, HT_FAKE, HT_XEN_HVM31])
+HTS_REQ_PORT = frozenset([HT_XEN_HVM31])
+
+HT_HVM_VNC_BASE_PORT = 5900
+HT_HVM_DEFAULT_BOOT_ORDER = 'dc'
+VNC_PASSWORD_FILE = _autoconf.SYSCONFDIR + "/ganeti/vnc-cluster-password"