graphite not displaying rrd files in the ui

After Graphite Installation the follwoing folder structure is being created in the /opt/graphite directory

Under the rrd folder location, i have copied all the rrd files

bash # ls -l /opt/graphite/storage/rrd/BulkData/device01-test/

and the output is

cpu-0  interface-br0   interface-eth1  interface-eth3    interface-lo     load
cpu-1  interface-eth0  interface-eth2  interface-ethip0  interface-ueth3  memory

When i goes to the graphite web-server it's displays nothing, is this is the correct way to load archived rrd data, in the rrd location

i have restarted the carbon and apache httpd server but stills the UI not showing the metrics of this data, whats wrong i'm doing ?

Maybe your Graphite instance is missing RRD support because you haven't installed python-rrdtool as mentioned in the Graphite installation document? I suppose Graphite checks for the availability of this module and if missing disables RRD support.