In short
- An old laptop is a better first server than an old desktop: it's quiet, uses 15–30 watts, and has a built-in battery that rides out power cuts.
- Syncthing (free) keeps a copy of every phone's photos and every laptop's documents on the server, automatically, with no cloud involved.
- Jellyfin (free) serves your film and music library to TVs, phones and tablets, with artwork and resume-where-you-left-off.
- Start with Linux Mint or Windows plus those two programs and an external drive. Move to a dedicated server OS only if you outgrow it.
"Home server" sounds like a rack in a basement. In practice it's an old computer in a closet, switched on, running two free programs. One quietly collects backups from every device in the house. The other serves your films and music to every screen. This guide builds exactly that, and no more.
Which old machine
Almost any PC from 2012 onward will do. The surprising recommendation is to prefer an old laptop over an old desktop. A laptop idles at 15–30 watts against 40–100 for a desktop tower, which at the current US average of about 18 cents per kilowatt-hour is the difference between roughly $30 and roughly $100 a year to leave on. A laptop is quiet, small enough for a shelf, and has a built-in battery, so a power cut doesn't corrupt the backup that was in progress. A laptop with a broken screen is perfect; the screen is the one part a server never uses.
Two hardware rules: put the machine on wired ethernet if at all possible (backups over Wi-Fi are slow and flaky), and give it an SSD for the system if it still has a hard drive, because a server restarts rarely but a hard drive spinning around the clock for years is the component most likely to fail.
What you'll need
- WD Elements 2TB portable hard driveRoomy, simple backup storage. Amazon
- Amazon Basics Cat-6 ethernet cable, 25 ftSidesteps Wi-Fi problems entirely. Amazon
- OMOTON vertical laptop standKeeps a closed laptop cool and tidy. Amazon
Paid links. Prices change often, so we don't print them; the listing shows the current price. We earn a commission on purchases, at no cost to you.
Storage: one big external drive
For a first server, an external hard drive plugged into the machine is the right answer. It's cheap per terabyte, it's easy to replace, and if the server itself dies you plug the drive into any other computer and everything is there. Size it at twice the total of everything you want to back up, and add a second drive later for the media library if it grows.
One rule worth internalizing: a server is where copies live, not the only copy. Your photos should exist on the phone or laptop that made them and on the server. If you want to survive a fire or a burglary, add a cloud backup of the irreplaceable folders on top; the server makes that easy because everything is already gathered in one place.
| Product | Best for | |
|---|---|---|
| WD Elements 2TB portable hard drive | Household backups, media libraries | Amazon |
| Seagate Portable 2TB external hard drive | Same job as the WD; pick by price | Amazon |
Paid links. Prices aren't shown here because they change often; the listing has today's price.
Operating system: keep it simple
You can run this on the Windows 10 that's already there, kept patched with free ESU updates to October 2027, or on Linux Mint, which is the better long-term choice for an always-on machine: no forced restarts, no deadline, lighter on old hardware. Both programs below run identically on either.
You will read about dedicated server systems: OpenMediaVault (currently version 8, built on Debian) and TrueNAS Community Edition (currently 25.10). They're excellent, and they're the right step up when you want multiple drives pooled together with redundancy, or user accounts for a household. They're also a bigger learning curve than this guide assumes. Start with Mint or Windows, and move up when you can name the feature you're missing.
Backups: Syncthing
Syncthing is free, open-source, and does one thing: keeps folders identical across your devices, directly, with no company's cloud in the middle. Install it on the server and on each phone and laptop, pair them once by scanning a QR code, and choose which folders to share. From then on, every photo taken on a phone appears on the server within minutes, and every document saved on a laptop is mirrored the next time it's on the home network.
- Install Syncthing on the server (from syncthing.net, or Mint's Software Manager) and set it to start at boot. Open its web page in a browser on the server.
- Install it on each device: the Syncthing app on Android, Möbius Sync on iPhone, the desktop app on other laptops.
- Pair each device with the server by showing the server's QR code to the phone. Accept the pairing on both ends.
- Share folders one way. On the phone, share the camera folder as "send only." On the server, accept it into a folder on the external drive. "Send only" means deleting a photo on the phone to save space doesn't delete the server's copy.
- Turn on versioning for the server's copy of each folder (Folder → Edit → File Versioning → Staggered). Now an accidental overwrite on a laptop is recoverable from the server for months.
Media: Jellyfin
Jellyfin is a free, open-source media server, currently at version 12. Point it at the folders of films, TV, music and photos on the external drive and it fetches artwork and descriptions, remembers where everyone stopped watching, and serves the lot to the free Jellyfin apps on smart TVs, Fire sticks, phones and tablets. If you've built the media PC, Kodi on that machine can use Jellyfin as its library too, so every screen in the house sees the same collection.
One expectation to set: an old laptop can serve files all day, but it may struggle to transcode, that is, convert a video on the fly for a device that can't play the original format. Most modern TVs and phones play the common formats directly, so this rarely matters. If it does, the fix is to store media in a widely supported format rather than to buy a faster server.
Running it around the clock
- Lid closed, no sleep. Windows: Power Options → "Choose what closing the lid does" → Do nothing, and set sleep to Never while plugged in. Mint: Power Management, same options.
- Battery care. A laptop plugged in permanently should have a charge limit set if the maker's software offers one (Lenovo Vantage, Dell Power Manager, HP's BIOS setting, MyASUS), typically 80%. If the case ever bulges, stop and have the battery removed.
- Airflow. Stand it on its edge with the vents clear, and blow the dust out once a year.
- Wake-on-LAN, if you'd rather not leave it on: enable it in the BIOS and on the wired network adapter, and any phone app can wake the server when you need it. Backups need the machine awake, so most people just leave it on.
- Updates. Once a month, log in, install updates, restart. That's the whole maintenance schedule.
The drive from your last upgrade
If you've done the SSD upgrade on another machine, the hard drive you removed makes a fine second server drive in a USB enclosure, for the media library or as a second copy of the backups.
Drive enclosure
UGREEN 2.5" USB 3.0 drive enclosure
Turns the hard drive you just removed into a portable backup drive. Nothing gets thrown away.
See price on Amazon Paid link
Product links on this page are affiliate links. If you buy through one, we earn a small commission at no cost to you, and the retailer's cookies apply once you're on their site (we run none). We link only to things that fit the advice above, and we never link to replacement computers as a fix for a working one.
