24 bay nas max hard drives 24 hard drive form factors 25 35 inch hard drive types hdd ssd hard drive mounting removable drive hard drive access front hard drive location horizontal internal interfaces sata iii sas 20 target audience business internal file system ext4 external file systems ext3 ext4 ntfs fat32 hfs raid levels 0 1 5 6 10 networking 10 gigabit gigabit 101001000 connections 4x usb 30 4x usb 20 2x sfp 4x rj 45 1x mini sa