12 bay nas memory capacity 48 tb max hard drives 12 hard drive types hdd ssd internal interface sata ii internal file system btrfs external file systems ext3 ext4 fat32 hfs raid levels 0 1 5 6 10 5 jbod networking gigabit 101001000 connections 2x esata 1x usb 20 2x usb 30 4x rj 45 cases 2u rack mount processor intel core i3 3220v2 clock speed 3 300 mhz ram 4 gb ram type ddr3 optical disc drives without protocols cifssmb afp n