Build a Plex Media Server: Everything You Need in 2026

A finished Plex server is your own private streaming service: every movie and show you own, with artwork, subtitles, and resume points, playing on any TV, phone, or laptop in the house, and no catalog shuffling it away next month. This is the payoff project for two explainers already on this site, what a NAS actually is and how RAID keeps a dead drive from taking your library with it. There are two realistic ways to build one in 2026, a NAS with an Intel chip or a small mini PC feeding a drive enclosure, and this is the complete parts list for both, with honest numbers on the thing most guides fudge: transcoding.

Direct Play or Transcoding: Decide This First

Whether your players can direct play your files is the single fact that decides how much this build costs, so settle it before you buy anything. Direct play means the server hands the file over untouched and the TV does the decoding; almost any hardware can serve several direct-play 4K streams at once. Transcoding means the server converts the video in real time because the player cannot handle it as-is, and that is where cheap hardware falls over.

Your server will transcode when:

• a TV app cannot decode the codec, most commonly 4K HEVC on smart TV apps from roughly 2015 to 2019
• you send a 4K file to a 1080p screen or a phone
• someone streams remotely and their bandwidth forces a lower quality
• subtitles have to be burned into the picture

Modern dedicated streaming boxes direct play nearly everything, aging built-in TV apps often do not, and remote viewers transcode almost every time. Audit your actual TVs against your actual files before deciding.

If everything in your house direct plays, buy the cheap Synology below and stop; if anything will transcode 4K, you need Intel Quick Sync, not a graphics card. Both transcoding picks in this kit use Quick Sync, the video engine built into Intel chips, which handles multiple simultaneous 4K conversions at a fraction of the cost, power draw, and noise of a discrete GPU.

Pick Your Route: One Box or Two

The NAS route costs more but gives you a single quiet appliance; the mini PC route is the cheapest way to real 4K transcoding but means two boxes and setting up the drive mirror yourself. Here is the whole decision at a glance:

What You Need

The NAS route: UGREEN NASync DXP4800 Plus

This is the one-box answer: four drive bays, two NVMe slots, 10GbE plus 2.5GbE networking, and a Pentium Gold 8505 whose Quick Sync engine reviewers have run through three simultaneous 4K-to-1080p transcodes without stutter. Start with two mirrored drives and you still have two empty bays to grow into. The most repeated owner complaint is that UGOS Pro software feels immature next to Synology DSM, and there is no native Plex app in its store, so installing Plex takes a manual package step; that is a one-time annoyance for anyone comfortable following instructions, but a real friction point if you wanted zero fiddling.

The mini PC route, part 1: Beelink Mini S13

The N150's Quick Sync engine hardware-transcodes 4K HEVC for about $329, roughly half the UGREEN's price, in a palm-size 4.9 x 4.4 x 1.6 inch box that maxes out at 25 watts. It has a 2.5GbE port, 12GB of RAM, and a 512GB SSD for the OS and Plex metadata; what it lacks is anywhere to put 3.5-inch drives, which is the enclosure's job below. The complaint to know about: a minority of units across the Beelink S13 family fail early with random shutdowns, and buyers report slow warranty turnaround. This exact listing is also new, holding 3.8 stars on just 5 ratings while the longer-running S13 listing sits at 4.3 across 430, so test yours hard in the return window.

The mini PC route, part 2: TerraMaster D4-320

Four hot-swap bays over a single 10Gbps USB-C cable turn the Mini S13 into a proper media server; the link is faster than the mini PC's network port, so it never bottlenecks Plex. There is no hardware RAID inside, so you mirror the drives in Windows Storage Spaces or Linux mdadm, which surprises some buyers. The most repeated complaint is that empty trays rattle from vibration until all bays are populated or shimmed; with two drives and two empty trays, expect to fold a strip of paper into the spares. Skip this entirely if you chose the NAS route.

The budget direct-play route: Synology DiskStation DS225+

At $338.99 as of this writing, with the most polished operating system in the category and 4.6 stars across 169 ratings, this is the right box if, and only if, everything in your house direct plays. Be clear-eyed about the catch: Synology ships this generation without the Intel graphics driver, so Plex hardware transcoding is officially unsupported despite the Quick Sync-capable chip inside. Its 2.5GbE port has headroom for several simultaneous direct-play 4K streams, but the 2GB of soldered RAM is tight for anything beyond Plex, and there is no expansion path past two bays.

The storage: WD Red Plus 8TB, buy two

Two of these in RAID 1 give you 8TB of usable space that survives a drive failure, exactly the scenario the RAID explainer walks through. CMR recording makes rebuilds safe, the 5640 RPM spindle runs cool and quiet for a box that never sleeps, and the 180TB/year workload rating plus 3,615 ratings at 4.3 stars make it the most proven part in this kit. The dominant recent complaint is simply the price: this drive sold near $170 in 2024 and the 2025-2026 storage crunch pushed it to $339.99 as of this writing. A few buyers also report thin single-drive packaging and occasional dead-on-arrival units, so run a full surface test the day they arrive.

The wiring: Cable Matters Cat 6, 5-pack

A Plex server must be wired, full stop; Wi-Fi is how you get buffering blamed on innocent hardware. Five 10-foot Cat 6 runs for about $20 carry 2.5GbE at full length, cover the server, router, and a TV box, and leave spares, backed by 4.8 stars across 11,784 ratings. The recurring gripe is retention clips snapping if you squeeze the boot too hard on removal, which matters only if you replug constantly.

The optional insurance: APC Back-UPS 600VA

Genuinely optional: Plex runs fine without it, but a power cut mid-write is one of the few things that can corrupt a RAID array, and 330 watts with roughly 23 minutes of runtime at a 100W load is several times what either route draws. The long-term complaint is that the internal battery degrades after roughly 2-3 years and the replacement costs about half the unit's price; it is also selling at $83.99 as of this writing, above the $56 to $65 it typically sold for. If the budget is tight, add it later; if the drives will hold irreplaceable files, add it now.

What It Costs

Budget about $1,040 to $1,360 all-in, and know that the mirrored drives are the biggest line item in every build. As of writing:

• Direct-play build: DS225+ + two WD Red Plus 8TB + cables: about $1,040
• Mini PC transcoding build: Mini S13 + D4-320 + drives + cables: about $1,190
• NAS transcoding build: DXP4800 Plus + drives + cables: about $1,360
• The UPS adds about $84 to any of them

Then there is Plex itself, and its recent pricing changes belong in the buying decision. In-home streaming is still free, but streaming remotely now requires Plex Pass or the viewer-side Remote Watch Pass, a few dollars a month, and hardware transcoding, the whole reason to buy a Quick Sync chip, is a Plex Pass feature. The lifetime Plex Pass has climbed steeply through repeated price hikes, so check the current price and treat a monthly subscription as the sane on-ramp until you are sure this hobby sticks.

Running cost is the number nobody prints, so here it is at the US average of about 17 cents per kWh. The Mini S13 maxes out at 25 watts, which is under $40 a year even running flat out, and far less at idle; both NAS units live in the same territory. An old gaming desktop idling around 100 watts costs roughly $150 a year, which is why repurposing the closet PC often costs more over two years than buying purpose-built hardware.

Step-by-Step Setup

1. Install and test the drives. Slot both WD Red Plus 8TB drives into the tool-free trays of your NAS, or into the D4-320 on the mini PC route. Run the built-in SMART extended test on each before trusting them with anything.
2. Wire the server to the router. Use a Cat 6 run from the server's fastest port to the router. On the mini PC route, also route the enclosure's USB-C cable so nobody can snag it; one unplug takes the whole array offline.
3. Mirror the drives. On the UGREEN or Synology, create a RAID 1 pool in the setup wizard. On the Mini S13, the enclosure has no hardware RAID, so build the mirror in Windows Storage Spaces (or mdadm on Linux).
4. Install Plex Media Server. On the UGREEN this is a manual package install since there is no native store app; on Synology it comes from Package Center; on the mini PC it is the standard Windows or Linux installer. Set it to start on boot.
5. Add libraries with clean naming. Plex matches artwork and metadata from folder and file names, so use the pattern Movies/Title (Year)/Title (Year).ext before pointing a library at the folder. Fixing names later is far more tedious than doing it right once.
6. Turn on hardware transcoding and verify it. With Plex Pass active, enable hardware acceleration in the server's transcoder settings, then force a transcode (play a 4K file on your phone at a lower quality) and confirm the dashboard shows the stream as hardware transcoded.
7. Set up remote access and plug into the UPS. Enable remote access only if someone outside the house will stream, since that is what triggers the Plex Pass or Remote Watch Pass requirement. Put the server, enclosure, and router on the battery-backed outlets of the APC unit, not the two surge-only ones.

Mistakes to Avoid