Network File System is a way to access files on other computers as if they were on yours
Network File System (NFS) is a method that lets your computer read and write files stored on another computer across a network — without copying those files to your own hard drive first. When you open a file through NFS, you are working with the original file sitting on a remote server. Changes you make save back to that server when ready. It works the same way whether the other computer is in the next room or across the building.
NFS is common in offices, schools, and research labs where many people need to work with the same files at the same time. Instead of emailing versions back and forth or storing everything on a USB drive, everyone connects to a central file server. One person edits a spreadsheet, another person opens it five minutes later and sees those changes already there.
The trade-off is that NFS requires a working network connection. If your internet drops or the server goes offline, you lose access to those files until the connection comes back. Files also move slower over a network than they do from your local hard drive, which matters if you work with large video files or databases.
Key Takeaways
- NFS lets you open and edit files stored on a remote server without downloading them to your computer first.
- Multiple people can work with the same files at the same time, and everyone sees the latest version when ready.
- You need an active network connection to access NFS files — if the connection drops, you cannot use those files until it comes back.
- NFS is faster than emailing files or using USB drives, but slower than working with files on your own hard drive.
- Setting up NFS requires a server computer running NFS software and client computers configured to connect to it.
How NFS differs from copying files to your computer
When you copy a file from a server to your computer, you own a separate version. You can edit it offline, but if someone else edits the original on the server, you now have two different versions. Merging those changes back together is your problem to solve.
With NFS, there is only one version. You open it, edit it, save it — and the server stores that one version. The next person who opens it sees your changes. This prevents the confusion of multiple versions floating around, but it also means you cannot work on NFS files when you are offline or when the network is down.
NFS also does not read the entire file to your computer. If you open a 500 MB video file through NFS, your computer does not copy all 500 MB to your hard drive. It reads the parts you need from the server. This saves disk space on your computer but makes the file feel slower to work with because every read and write has to travel across the network.
Who uses NFS and why
Universities use NFS so students and researchers can access shared lab data from any computer on campus. A biology student can start an analysis on a lab computer, then continue it from the library using the same files without copying anything.
Design studios use NFS for large project files — 3D models, video footage, design assets — that are too big to email and too important to have multiple versions of. A designer opens a file, makes changes, saves it, and the next designer sees those changes when ready.
System administrators use NFS to manage software and configuration files across many computers at once. Instead of installing software on each machine separately, they can store it on a central server and have all the computers run it from there.
Small offices sometimes use NFS as a straightforward alternative to more complex file-sharing systems. It requires less setup than cloud storage services and keeps all files under your own control on your own server.
The security trade-offs of using NFS
NFS was designed in the 1980s when most networks were small and trusted — everyone on the network was someone you knew. It does not encrypt files as they travel across the network, which means someone with access to your network traffic could potentially read the files you are accessing. This is a real concern if you work on a shared office network or public WiFi.
NFS also does not have strong built-in authentication. It relies on the network itself to verify that you are who you say you are, which works fine on a closed office network but is risky on the open internet. For this reason, NFS is almost never used outside a private network.
If you do use NFS, keep it behind a firewall and only on networks you control. Many organizations wrap NFS in a VPN (virtual private network) to encrypt the connection, or they use newer alternatives like SMB (Server Message Block) that have stronger security built in.
How to set up NFS on your network
Setting up NFS requires a server computer and one or more client computers. The server runs NFS server software — on Linux this is usually the nfs-utils package, on macOS it is built in, and on Windows you need third-party software like Cygwin or a Linux virtual machine. The server designates which folders are shared and who can access them.
Client computers need NFS client software to connect. Linux and macOS have this built in. Windows does not have native NFS support, so you either need to install a third-party client or use a different file-sharing method like SMB.
Once the server is running, a client computer can mount the shared folder — meaning it appears in your file browser like a regular folder, even though the files are actually on the server. On Linux and macOS, you do this with the mount command in the terminal. On Windows with an NFS client installed, you use the graphical interface to add the network location.
After mounting, you open and save files through that folder exactly as you would a local folder. The NFS software handles sending your reads and writes across the network to the server.
When NFS is not the right choice
If you need to work offline, NFS is not for you. Cloud storage like Google Drive or Dropbox lets you read files to your computer, work on them offline, and sync changes back when you reconnect. NFS cannot do that.
If you work across the internet rather than on a local network, NFS is too slow and too insecure. Cloud storage, file transfer services, or collaboration tools like Microsoft 365 or Google Workspace are better choices. They are designed for internet use and include encryption and authentication.
If you need version history — the ability to see who changed what and when, or to roll back to an earlier version — NFS does not provide that. You need a version control system like Git or a document collaboration tool that tracks changes.
If your team is small and files are small, emailing files or using a shared folder on a cloud service is simpler than setting up an NFS server. NFS makes sense when you have many people, large files, and a stable local network.
NFS compared to other file-sharing methods
| Method | Best for | Requires network | Works offline | Encryption |
|---|---|---|---|---|
| NFS | Large files, many users, local networks | Yes, always | No | No (unless wrapped in VPN) |
| SMB (Windows shares) | Mixed Windows and Mac networks | Yes, always | No | Optional, depending on setup |
| Cloud storage (Google Drive, Dropbox) | Small teams, internet use, offline work | For sync only | Yes | Yes |
| Email or USB drive | One-time file transfers, small files | For transfer only | Yes | No (unless you encrypt manually) |
Frequently Asked Questions
Can I use NFS on my home network?
Yes, if you have a spare computer or a network-attached storage device (NAS) that supports NFS. You would set that device as the server and connect your other computers to it. For most home users, cloud storage or SMB shares are simpler because they require less setup and work across the internet.
Is NFS safe to use on public WiFi?
No. NFS does not encrypt files in transit, so someone on the same WiFi network could potentially read your data. Only use NFS on networks you control and trust, such as a private office network behind a firewall. For public or untrusted networks, use cloud storage or a VPN.
What happens if the NFS server goes down?
You lose access to those files when ready. Any files you had open become inaccessible, and you cannot save new work. This is why organizations that rely on NFS also maintain backups and redundant servers. If you need constant access, cloud storage is more reliable because it has built-in redundancy.
Can I use NFS with my Mac and Windows computers together?
Yes, but Windows does not have built-in NFS support. You would need to install third-party NFS client software on Windows computers. Many organizations use SMB instead because it works natively on both Mac and Windows without extra software.
Is NFS the same as a network drive?
NFS is one way to create a network drive, but not the only way. SMB shares, cloud storage, and WebDAV are other methods. The term "network drive" just means a folder on another computer that appears in your file browser. NFS is the specific technology that makes that happen on Linux and Unix systems.