Looking to get some advice on what to do. I've got a Drobo 5d that up until last week was running fine. I updated my iMac to Sierra and it's been nothing but headaches. It doesn't show up on the finder. It shows up in Disk Utility and Drobo assistant but I cannot mount it. Nothing happens when I try to mount it. I've also rebuilt the index last week through diskwarrior but now Diskwarrior says it cannot be rebuild but to disk hardware failure. Drobo Assistant is all green across the board. Thank you for the help!