Hello again [NAME],   With all due respect, I think you really need to reconsider this: "It is some years now that FW 07.84.47.60 is working and not giving any problems". Because from my point of view, the errors "Alternate RAID controller module removed" and "Temperature sensor removed" could may be avoided by having the firmware up to date.  If you ask me, as a Dell technician, I would recommend you to update the firmware. Because, at the moment, you want to keep a FW version from the year 2013. Please, have a look to this, below are all the fixes you are missing with your current FW version:   [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE] [IMAGE]     As you can see, there are a lot of fixes. I'm not sure if I've explained myself well and you can see my point. But I really think we need to get rid of this thinking: "If it works, don't touch it" or "Better old good known firmware from 9 years ago that the new one". If you were on my side and you would have seen, like me, so many issues that could have been avoided by having an updated firmware version, I am sure you would think differently.   When you replace a controller in a MD3200 that has dual controllers the configuration from the failed controller will be copied over to the new controller.  Also if the firmware that is on replacement controller is older than the controller in the MD3200 then it will upgrade the firmware.  Here is how we recommend that you replace a controller on an MD3xxx: 1.     You can login to MDSM and go to the support tab & then Manage RAID Controller Modules you can place the effected controller in an offline status.  2.     Then you can go to the Summary Tab & confirm that the controller is offline. Once the controller is offline you can swap it with your replacement controller.  3.     Once the controller has been replaced and all cables reconnected then you go back to the support tab & online the controller.  4.     You can check in the summary tab & see that both controllers are online.  Now if the new controller is at a different version of firmware then the MD 3xxx should copy the correct firmware that is running on the other controller to the replacement controller so that they match.  Once the firmware matches on both controllers then both controllers should be active.    Hope this helps. Regards.
Good morning, We have a PowerVault MD3200 with the bottom redundant controller that failed. On the log only "Alternate RAID controller module removed" and "Temperature sensor removed". We tried to remove and put it back again with no results. We opened it and no signs of failure on the PCB. We don't have the controller service cable. On the back of the controller, no lights on neither service ethernet port: [IMAGE]   What I would like to ask, as no lights are on on the controller, could be also a backplane problem? All other components are working (both PSU and the primary controller). Thank you, Matteo 
MD3200 controller fail