Synology rack station rs815 4 x total bays nas server 1u rack mountable marvell armada xp mv78230 dual core 2 core 1 33 ghz 8 tb hdd 1 gb ram ddr3 sdram serial ata600 raid supported 0 1 5 6 10 basic hybrid raid jbod 4 x 2 53 5 bay gigabit ethernet esata 2 usb ports 2 usb 3 0 ports network rj 45 disk station manager iscsi cifs afp ftp nfs kerberos