NetApp "OnCommand Operations Manager" will help you achive this.
Get detailed reports
Make storage management more proactive and effective with reports to track storage growth and trending. Get intelligent, comprehensive reports of utilization and trend information to support your capacity planning, space usage, and backup allocation. See how physical resources are impacted by data utilization and deduplication.
Visit here for more details... http://www.netapp.com/uk/products/management-software/operations-manager.aspx
I hope this helps