Ultra performance nas optimized for intensive tasks and encryptionr featuring a quad core processor hardware encryption engine and flawless software integration ds1515 is a powerful expandable 5 bay nas server that delivers outstanding speed and accelerated data encryption easily scalable the ds1515 can be equipped with up to 6gb of ddr3 ram and host up to 90tb of raw capacity with two synology dx513 unitsr quad core cpu for blazing fast performancer ds1515 is powered by a quad core cp