Drive Firmware Upgrade During a drive firmware upgrade, communication was lost to the SANtricity System Manager Unable to get back to the drive upgrade progress screen The following error message was ...Drive Firmware Upgrade During a drive firmware upgrade, communication was lost to the SANtricity System Manager Unable to get back to the drive upgrade progress screen The following error message was displayed once access to the SANtricity System Manager was restored: One possible cause is the object on which you were performing the operation no longer exists. Other possible causes include network issues, inability to communicate with the controller, or loss of power to the storage array.