Drive 3 on RS2416RP+ is severely damaged and has failed. Back up your data immediately <https://kb.synology.com/DSM/tutorial/How_to_back_up_your_Synology_NAS> and then replace the drive. Drive information Brand: WDC Model: WD4002FYYZ-01B7CB0 Capacity: 3.6 TB Serial number: K4J2HH1B Firmware: 01.01M02 S.M.A.R.T. Status: Failing Drive reconnection count: 0 Drive re-identification count: 0 Sign in to store241-1 (if not already) for more information. From store241-1