for my office i need a nas server . but i do not which is the latest nas server i the market now a days . so i need your help for selecting the best nas server for my office i have heard that synology is a good nas server .but they are saying that its a 4 bay nas server what is 4 bay nas server is it something new technology or same as normal nas server . please elaborate the 4 bay nas server of synology and whether it will ne fine for me to buy 4 bay nas server of synology .