Hello, 

Dell PS6610 Raid 6, am able to log into Equallogic Group Manager. 

The battery in our EQL primary controller is currently under a critical warning and needs to be replaced. While we wait on that part to arrive we're seeing latency issues with data transfers due to the failing controller. How do we tell our Equallogic to swap to the controller that has no current potential hazards? Will it require the device to be powered down or can this happen without having to shut down all connected machines and then the datastore?