NAS is a convenient storage device that allows multiple devices connected via network - computers, smartphones, tablets, TVs, etc. - to share data. It can store everyone's photos, videos, music, and documents in homes and offices, allowing network access when needed.
This page provides an easy-to-understand explanation of the benefits and applications of introducing NAS, from selection methods to connection procedures. How will incorporating NAS into your daily life make your digital lifestyle more convenient and comfortable? Let's explore together!
1What is NAS?
NAS stands for "Network Attached Storage," referring to hard disk drives (HDDs) or SSDs that can be connected to a network. It's also called "Network-compatible HDD." This page focuses primarily on consumer NAS devices and provides detailed explanations about NAS technology.
1-1NAS (Network HDD) vs External HDD (USB Connection) Differences

NAS is a storage device that can save data from computers and other devices, similar to external HDDs. The major difference from external HDDs is the ability to connect to networks. While external HDDs can only be accessed from one device via USB connection, NAS allows simultaneous access from multiple devices - computers, smartphones, tablets, TVs, etc. - connected to the same network for data storage and retrieval.
1-2NAS Advantages and Disadvantages
NAS offers two major advantages: easy data sharing and access from anywhere. It's recommended for people using multiple devices or families wanting to share photos, videos, music, and recorded programs. Wi-Fi access is supported, and you can also access your home NAS from remote locations via internet.
However, initial setup and management require some technical knowledge, which might be challenging for those uncomfortable with computers. Also, depending on network conditions, data storage and retrieval may take longer than with external HDDs.
2Network Storage Brings Countless Conveniences
NAS functionality extends beyond simple data storage. Network connectivity enables file sharing, photo/video/music/recorded program playback, computer data backup, remote access, and convenient utilization of stored data.
2-1File Sharing Capabilities
NAS's primary advantage is simultaneous access from multiple devices for data sharing. By storing data on one NAS, family members can access it anytime, anywhere, using NAS like their personal hard drive. This eliminates the need to store data on individual computers or smartphones, reducing storage waste.
2-2Photo and Video Sharing
Many NAS devices include "DLNA server functionality (media server functionality)" that distributes stored photos and videos to network devices. Storing photos and videos on NAS makes them viewable on DLNA-compatible smartphones, tablets, TVs, and gaming consoles. Family members can collect photos and videos from their individual computers and smartphones on NAS for everyone to enjoy.
2-3Computer Data Backup
NAS is also useful for computer backups. Windows 10/11 computers can use "Backup and Restore" while Macs can use "Time Machine" to automatically backup computer data to NAS regularly. When computer failures make data unreadable, you can restore computers using NAS data.
2-4Remote Access to Home Data
Many NAS devices feature remote access functionality for internet-based access and remote operation. This allows you to use NAS data from remote locations using computers, smartphones, and tablets just like when at home or office. It's also convenient for sharing data with distant family, relatives, and friends. Buffalo NAS devices offer this through "Web Access" functionality.
2-5Music Enjoyment Throughout the Home
NAS devices with server functions like "DLNA" and "AirPlay" can distribute stored music data to network devices. Storing purchased music data on NAS allows playback and enjoyment on computers, smartphones, and tablets throughout the home. It's also recommended for families wanting to share music.
Buffalo NAS devices support "iTunes," allowing iTunes on LAN-connected computers to automatically discover and play music files stored on NAS. Supports playback from up to 5 computers and iPhone transfers.
2-6TV Program Recording and Playback
NAS devices with "DTCP-IP server functionality" can dub (move) TV programs recorded on DTCP-IP compatible TVs and recorders to NAS and distribute them to network devices. NAS can also be used as TV recording HDDs. Recorded programs stored on NAS can be viewed on smartphones and tablets through dedicated apps in locations other than TV-installed rooms like bedrooms and bathrooms.
3Home NAS Implementation
NAS devices range from simple consumer models to multifunctional business models, with prices spanning from tens of thousands to millions of yen. For home implementation, consumer NAS devices with easy initial setup and reasonable prices are recommended.
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4Business NAS Implementation
For business use, business NAS with larger capacity, higher performance, and more functionality than consumer NAS is recommended.
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Summary
How was that? Network access from multiple devices. File, photo, video, and music sharing capabilities. Internet access from remote locations. Direct copy from USB memory and SD cards. Did you understand these NAS advantages?
Consumer NAS initial setup and management aren't too difficult. For those wanting to effectively utilize home Wi-Fi and make digital life more convenient and comfortable, please consider NAS implementation.