I have a MD3200i running firmware version 07.84.53.60 on the RAID module. This MD3200i has always only had one controller. Everything has been running fine but I want to add a second module to this system.
Are there any gotchas that I should be aware of before attempting this? Do I need to power down the MD3200i and all ESXi hosts attached to it before installing the module? What if the new module has a newer firmware version than the firmware installed on the current module?