JLNA221082, With the PowerVault MD line there is no actual power button. To power off the array you would just use the switches on the individual power supplies. I went ahead and attached the owners manual link below for your reference. support.dell.com/.../OM.pdf If you have any questions please feel free to let us know. 
Hi everyone:I purchased a new MD3600f array, but I don't have any clue, how to turn it off, is there a button on the console of the Storage Manager Client, that shut down the array?, or do I have to go directly to the power supplies and press both energy buttons to power off the arrayAny comment is more than welcomeThanks
Process to turn off an MD3600f Array