I have configured network on my office and several users uses the network and transfer the data accordingly. I have observed that due to in between access of the network lots of power is been consumed. One of friend advised me about NAS devices and gathers all the data onto a single device. So I have questions regarding same that does NAs device sleep until accessed by any node over the network. Can this device be used remotely from other network or web like we do using FTP service? So please provide me with this information on it.