HP P822 contoller

Hi everybody I own a HP DL380 g7 which works fine. Today I added a p822 controller for my d2700 storageworks. But when a attache the d2700 the controller doesn’t initialize anymore. If I start the server and attache the d2700 sas cables when it’s started it finds the d2700 and I can see the disks. Obviously I can’t use it...