2 bay nas memory capacity 8 tb number of installed hard drives 2 max hard drives 2 memory capacity per hard drive 4 tb internal interface sata ii internal file system ntfs fat external file system fat32 raid levels jbod 0 1 synology hybrid raid networking fast ethernet 10100 connections 1x usb 20 2x usb 30 1x rj 45 case tower ram 512 mb ram type ddr3 optical disc drives without protocols ftp http ftp hdd managements power management hot