How to Build a Home NAS With an Old PC for Media Streaming

An old desktop can become a capable network-attached storage system for films, music, photos and documents. Instead of leaving the computer unused, you can turn it into a central media library that serves devices across your home network.

A home NAS stores files on local drives and makes them available through a web interface, file-sharing protocol or streaming application. With the right software, a television in Brisbane, a laptop in Melbourne and a phone on the same Wi-Fi network can access the same collection.

This approach is often cheaper than buying a ready-made NAS enclosure, especially if you already have a spare PC, SATA hard drives and a wired network connection. It also gives you more flexibility for services such as Plex, Jellyfin, Syncthing and automated backups.

The main requirements are modest: a reasonably modern 64-bit computer, reliable storage, an Ethernet connection and an operating system designed for servers. Before starting, check whether the old machine’s power consumption makes sense, since Australian electricity prices can make an inefficient desktop expensive to run continuously.

Check the old PC before reusing it

Look for a computer with at least two SATA ports, 4GB of RAM and a dual-core processor or better. More memory helps if you plan to run several applications, but basic file storage and direct-play streaming do not require a powerful system.

Inspect the fans, power supply and drive bays, then remove dust carefully. A failing power supply can damage disks, while an ageing hard drive may already contain bad sectors. Run a disk health check before trusting any drive with important files.

A wired Gigabit Ethernet connection is strongly preferred. Wi-Fi can work for light use, but large 4K video files may buffer when the server is far from the router or separated by thick walls.

Choose storage and a NAS operating system

You can install a NAS platform such as OpenMediaVault, TrueNAS SCALE or Unraid. OpenMediaVault is a practical choice for older hardware because it has relatively low requirements and provides a straightforward browser-based management panel.

Use separate storage for the operating system and your media where possible. An inexpensive SSD can boot the NAS, while larger hard drives hold films, music and photographs. Combining drives into a mirror or parity arrangement can improve resilience, but it is not a replacement for an external backup.

Plan folders before copying data. Create separate shares for movies, television, music, family photos and personal documents, then use clear names and consistent permissions. If you are moving files from an existing computer, this file migration guide can help you organise the transfer safely.

Install the server and configure networking

Download the chosen NAS installer from its official website and write it to a USB stick with a tool such as Rufus or Balena Etcher. Boot the old PC from that USB drive, install the system to the dedicated boot disk and remove the installer after the first restart.

Give the NAS a fixed address on your home network. The most reliable method is usually a DHCP reservation in the router, which ensures the same local address without manually configuring every network setting. Record the address and administrator password somewhere secure.

Do not expose the NAS management interface directly to the public internet. For remote access, use a VPN such as Tailscale or WireGuard instead of opening several ports on the router. This is particularly important when the server contains private family photos or identity documents.

Add a media streaming service

Plex and Jellyfin are popular options for organising a digital video library. Both can fetch posters, descriptions and episode information, then present the collection through smart-TV apps, web browsers and mobile devices.

Jellyfin is open source and avoids subscription requirements for core features, while Plex offers a polished ecosystem and broad device support. Test whether your old PC can direct-play the formats you use. Direct play sends compatible files without conversion, reducing processor load and power consumption.

Transcoding is more demanding because the server converts video in real time. Older Intel processors with integrated graphics may handle some hardware-assisted transcoding, but compatibility varies. Keep original files in common formats such as H.264 video with AAC audio when possible.

Improve performance and reliability

Enable automatic updates where appropriate, but schedule reboots and maintenance for quiet hours. Monitor drive temperatures, storage capacity and system alerts through the NAS dashboard. A drive that regularly reports errors should be replaced before it fails completely.

Use an uninterruptible power supply if practical. Short blackouts and power fluctuations can interrupt disk writes, which is useful protection during summer storms in Queensland or South Australia. Set the NAS to shut down safely when the UPS battery becomes low.

For a typical Australian home, a wired connection from the NAS to a router or mesh node will provide smoother playback than relying on a distant wireless signal. If the machine sits in a study or garage, keep it ventilated and away from excessive heat.

Back up the files and manage access

A RAID mirror protects against a single disk failure, but it cannot protect against accidental deletion, ransomware or theft. Keep a second copy on an external USB drive, another computer or a reputable cloud service. Important documents and irreplaceable photos deserve more than one backup location.

Follow a simple 3-2-1 strategy: three copies of important data, on two different types of storage, with one copy stored elsewhere. Encrypt sensitive backups and test restoring a few files every few months rather than assuming the process works.

Create individual accounts for household members and give each person only the permissions they need. Guest access should be disabled unless there is a clear reason to use it. You can also store creative reference material, including digital publications from an independent art magazine, in a separate read-only library.

Once configured, an old PC NAS can quietly handle local streaming, document storage and automated backups for years. Keep its software updated, check disk health regularly and replace ageing drives before they become the weakest part of the system.