Featuring a quad core processor hardware encryption engine and flawless software integration ds2415 is a powerful expandable 12 bay nas server that delivers outstanding speed and accelerated data encryption easily scalable the ds2415 can be equipped with up to 6gb of ddr3 ram and host up to 144tb of raw capacity with a synology dx1215 expansion unit contains the wd red pro hdds nas optimised for 19 rack mount solutions with multi axis shock sensors vibration protection dual act