If one of the storage array controllers for either the Dell MD3860 or the Netapp E5660 is having a problem or is Offline, you may have to replace the controller.
If the controller was placed Offline on purpose, you can put the controller back online using SANtricity.
The controller will immediately go back to an Online state, regardless of whether it actually will stay in that state. Wait for about 5-10 minutes and if the Controller remains Online, then you are done. If the controller switches back to Offline, you will need to contact technical support for a possible RMA replacement.
If you plan to replace the controller yourself, follow these steps. The controllers are hot swappable.