12 bay nas nas enclosure max hard drives 12 hard drive types hdd ssd internal interface sata target audiences small and medium sized businesses smbs business internal file system btrfs external file systems ext3 ext4 ntfs fat32 hfs raid levels 0 1 5 6 10 single disk jbod networking 10 gigabit gigabit 101001000 connections 2x esata 1x usb 20 2x usb 30 4x rj 45 2x sfp cases 2u rack mount optical disc drives without protocols cifssmb