diff --git a/tools/python/xen/xend/server/DevConstants.py b/tools/python/xen/xend/server/DevConstants.py
--- a/tools/python/xen/xend/server/DevConstants.py
+++ b/tools/python/xen/xend/server/DevConstants.py
@@ -16,7 +16,7 @@
 # Copyright (C) 2005 XenSource Ltd
 #============================================================================
 
-DEVICE_CREATE_TIMEOUT  = 100
+DEVICE_CREATE_TIMEOUT  = 600
 DEVICE_DESTROY_TIMEOUT = 100
 HOTPLUG_STATUS_NODE = "hotplug-status"
 HOTPLUG_ERROR_NODE  = "hotplug-error"