DIY NAS vs Synology: Build or Buy in 2026?

The question is not really whether a DIY NAS is better than a Synology. It is whether the trade-offs are worth it for you specifically. A DIY build gives you more hardware per dollar and total control over the software stack. A pre-built Synology or QNAP gives you a polished experience with minimal ongoing effort.

This guide breaks down the real costs, power consumption, software differences, and maintenance burden of each approach. By the end, you will know which path fits your technical comfort level, your budget, and how much time you want to spend managing storage versus using it.

We are comparing three paths: a DIY NAS built around an Intel N100 mini PC running TrueNAS SCALE or Unraid, the Synology DS923+ at roughly $960, and the QNAP TS-464 at roughly $649. All diskless — drives are the same cost regardless of which box you put them in.

Total Cost Comparison

Here is what each path actually costs in 2026, excluding drives.

Synology DS923+ — ~$960

You get a 4-bay enclosure with an AMD Ryzen R1600 (2C/4T), 4 GB ECC DDR4 (expandable to 32 GB), two 1GbE ports, and a PCIe slot for a 10GbE or NVMe adapter. Synology DSM is included — no software license.

QNAP TS-464 — ~$649

Four bays, Intel Celeron N5095 (4C/4T), 4-8 GB DDR4 (expandable to 16 GB), two 2.5GbE ports, and two M.2 NVMe slots for SSD caching. QTS is included.

DIY Mini PC Build — ~$350-500

• Beelink EQ12 or S12 Pro (N100): ~$160 when in stock (availability has been inconsistent). Quad-core N100 (up to 3.4 GHz), 16 GB DDR5, 500 GB NVMe, dual 2.5GbE. This is your compute and boot drive.
• Jonsbo N3 NAS case: ~$170. Supports 8x 3.5-inch drives, Mini-ITX motherboard, SFX PSU. Aluminum build with dual rear fans.
• SFX power supply (300-450W): $40-60.
• LSI 9211-8i HBA card: $30-60 used on eBay. Gives you 8 SATA/SAS ports via PCIe.
• SAS-to-SATA breakout cables: $10-15.
• TrueNAS SCALE: free. Unraid Starter: $49/year (or Lifetime at $149).

Total DIY range: $380-525 for an 8-bay capable system with a faster CPU, more RAM, and better networking than either pre-built.

The catch: the mini PC approach using the Beelink as a standalone NAS (no case swap) limits you to USB-attached drives or a single internal NVMe. For a proper multi-bay NAS, you need either the Jonsbo case route with a separate Mini-ITX board, or you pull the N100 board from the Beelink and transplant it. Many builders instead buy a bare Mini-ITX N100 board (~$120-150) and skip the Beelink entirely.

The honest cost comparison: a 4-bay DIY build lands around $340-440. An 8-bay build runs $440-525. With the DS923+ now at ~$960 and the TS-464 at ~$649, the price gap between DIY and pre-built has widened significantly — you can build an 8-bay system for less than Synology charges for a 4-bay enclosure. The pre-builts still include the enclosure, power supply, and drive trays in one integrated unit, but the value math has shifted heavily toward DIY.

Performance and Hardware

The N100 in a DIY build is genuinely faster than the processors in both the DS923+ and TS-464 for most home lab workloads. Four cores at up to 3.4 GHz with DDR5 memory handles Docker containers, Plex transcoding, and file serving without breaking a sweat.

The DS923+‘s Ryzen R1600 is adequate but not powerful — it is a dual-core, four-thread embedded chip. Synology compensates with excellent software optimization. The QNAP TS-464’s N5095 is closer to the N100 in raw performance.

Where pre-builts have an edge: drive bay integration. Hot-swappable trays, proper SATA backplanes, status LEDs, and thermal management are engineered as a system. A DIY build in a Jonsbo case works well, but you are assembling these pieces yourself.

Networking is a clear DIY advantage. The Beelink EQ12 ships with dual 2.5GbE. The DS923+ only has 1GbE unless you buy a PCIe adapter. The TS-464 includes 2.5GbE stock.

Power Consumption

Power draw matters because a NAS runs 24/7. At $0.15/kWh, every watt costs about $1.31/year.

Synology DS923+: 12W idle (HDD hibernation), 24W typical with four drives spinning. Synology’s power management is excellent — drives hibernate reliably and wake quickly.

QNAP TS-464: 21W standby, 40W typical with four drives active. Higher than the Synology due to the more powerful N5095 CPU.

DIY N100 build: 8-15W idle for the board alone, depending on configuration. Add 4-6W per spinning 3.5-inch drive. A four-drive DIY system typically lands at 25-35W. An eight-drive system with the Jonsbo N3 and an HBA card runs 45-60W.

The takeaway: a well-optimized DIY build matches Synology’s power efficiency for the same drive count. A poorly chosen platform (old desktop hardware, ATX board, oversized PSU) can easily triple the power draw. Component selection is critical.

Software: TrueNAS SCALE vs DSM vs Unraid

This is where the decision gets personal.

Synology DSM

DSM is the gold standard for NAS software usability. The web UI is intuitive, mobile apps (DS File, DS Photo, Synology Drive) are polished, and the ecosystem is integrated. BTRFS support gives you snapshots and data checksumming. Container Manager handles Docker with a clean interface.

The downside: Synology locks certain features to their hardware, limits third-party RAM upgrades (with warnings), and charges for some add-on licenses (surveillance cameras, active backup). You are in their ecosystem.

TrueNAS SCALE

Free and open source. Built on ZFS, which is the most robust filesystem available for data integrity — checksumming, copy-on-write, self-healing with redundancy, snapshots, and native encryption. Since the Electric Eel release (24.10), TrueNAS SCALE uses Docker Compose instead of Kubernetes, making app deployment dramatically simpler. The newer Fangtooth (25.04) and Goldeye (25.10) releases have continued refining the experience.

The downside: ZFS wants matched drive sizes in a vdev. Adding capacity means adding a complete new vdev (another set of drives), not just slotting in one more disk. RAM recommendations are higher — 8 GB minimum, 16 GB preferred, 1 GB per TB of storage is the old rule (less critical with modern versions but still relevant for deduplication).

Unraid

Unraid’s strength is flexibility. Its parity-based system lets you mix different drive sizes, add one drive at a time, and access individual drives independently. The Starter license is $49/year (6 devices) and the Unleashed license is $89/year (unlimited devices). Lifetime options exist at roughly double the annual cost.

The downside: Unraid’s parity system is slower than traditional RAID or ZFS for writes. It does not checksum data like ZFS or BTRFS. Docker and VM support is solid but the community is smaller than TrueNAS.

Maintenance and Reliability

This is the factor most people underestimate.

Synology/QNAP maintenance: DSM and QTS push automatic updates. Drive health monitoring is built in with email alerts. BTRFS scrubs run on schedule. If a drive fails, you get a notification, pop in a new one, and the array rebuilds. Firmware updates rarely break things. Total monthly time investment: near zero.

TrueNAS maintenance: You manage OS updates manually (or set auto-update schedules). ZFS scrubs should run monthly — TrueNAS schedules these by default, but you need to actually check the results. SMART monitoring is built in but alert configuration requires setup. Docker containers need individual updating. When something breaks, you are reading forums and documentation. Total monthly time investment: 1-4 hours, more during initial setup.

Unraid maintenance: Similar to TrueNAS in terms of manual oversight. Parity checks run on schedule. The community forum is active and helpful but you are ultimately your own support team. Plugin and Docker updates are straightforward through the UI. Total monthly time investment: 1-3 hours.

The honest assessment: if you enjoy tinkering and want to learn, the maintenance is educational and satisfying. If you want storage that just works while you focus on other projects, buy a Synology.

DIY Build Recommendations

If you decide to build, here are two tested configurations.

Budget Build: Mini PC as NAS ($200-250, 1-2 drives)

• Beelink EQ12 (N100) — ~$160 when in stock
• USB 3.0 drive enclosure (single or dual bay) — $30-50
• TrueNAS SCALE or Unraid on internal NVMe

This is the simplest entry point. You get a capable server with dual 2.5GbE, run TrueNAS or Unraid from the internal SSD, and attach drives via USB. Limitations: USB adds latency and a failure point, maximum two drives practically, no hot-swap. Best for learning or light file sharing.

Full DIY NAS Build ($450-550, 4-8 drives)

• Mini-ITX N100 motherboard (ASRock N100DC-ITX or similar) — $120-150
• Jonsbo N3 case — ~$170
• SFX PSU (Corsair SF300 or similar) — $45-60
• LSI 9211-8i HBA flashed to IT mode — $30-60
• 16 GB DDR4/DDR5 (depending on board) — $30-50
• SAS-to-SATA breakout cables (2x) — $15-20
• Boot NVMe SSD (128-256 GB) — $20-25

This gives you a proper NAS chassis with 8 hot-swap bays, a low-power N100 CPU, and enough SATA ports for all bays via the HBA card. Flash the LSI 9211-8i to IT mode (passthrough, no hardware RAID) for use with ZFS or Unraid. Total idle power with four drives: roughly 25-30W.

Common Mistakes to Avoid

Using desktop hardware for a 24/7 NAS. That old gaming PC with an i5 and a 650W PSU will draw 80-120W idle. You will spend more on electricity in two years than a purpose-built N100 system costs.

Skipping ECC memory and then using ZFS without redundancy. ZFS checksums catch corruption, but a single-vdev pool with no redundancy means detected corruption cannot be repaired. If you build a DIY NAS, use at least mirror or RAIDZ1. ECC RAM is ideal but not strictly required for home use — the ZFS community has debated this for years and the consensus is that ECC helps but non-ECC is acceptable.

Buying a Synology and immediately replacing its OS. Some people buy a DS923+ to run TrueNAS (Xpenology). This defeats the purpose of buying Synology — you are paying the premium for DSM. If you want TrueNAS, build a DIY system and save the money.

Ignoring the HBA card firmware. LSI HBA cards must be flashed to IT mode (JBOD passthrough) for TrueNAS and Unraid. If the card is in IR mode (hardware RAID), your NAS software cannot manage drives directly. Buy pre-flashed cards on eBay or follow the flashing guides carefully.

Not budgeting for a UPS. Both DIY and pre-built NAS devices need a UPS. A sudden power loss during a ZFS write or BTRFS transaction can cause problems. A basic CyberPower or APC unit ($100-170) protects a multi-thousand-dollar data investment.

Wrap-Up

The decision comes down to what you value more: control and cost savings, or convenience and polish.

Build a DIY NAS if you enjoy hardware projects, want maximum performance per dollar, plan to run TrueNAS SCALE with ZFS for data integrity, or need more than four drive bays without spending $1,200+ on an 8-bay Synology. Budget $400-550 for a capable 4-8 bay system — well under half the cost of the equivalent pre-built.

Buy a Synology DS923+ or QNAP TS-464 if you want something that works out of the box, you value your time over tinkering, you need polished mobile apps and ecosystem integration, or you are building a NAS for family use where reliability matters more than customization.

Either path gives you a solid NAS. The worst choice is overthinking it for months and storing everything on a single unprotected drive while you decide.

For drive recommendations, see our best NAS hard drives guide. If you are leaning toward the pre-built route, our best NAS for home lab roundup compares the top options. And if Docker containers are your primary workload, check best NAS for Docker for tested container counts and RAM configurations.