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Synology

Synology DS223j 2-Bay NAS

  • 2-bay (diskless)
  • Realtek RTD1619B processor
  • 1GB DDR4 RAM
  • Gigabit Ethernet
  • DiskStation Manager (DSM) OS
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Is the Synology DS223j 2-Bay NAS worth it?

Yes, for the right buyer. The Synology DS223j 2-Bay NAS ranks #1 in our Best NAS Devices 2026 list (best overall). Its biggest strength: synology DSM is the best NAS operating system, clean UI, regular updates, deep app ecosystem. The main caveat: 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit.

Overview

What the Synology DS223j 2-Bay NAS does well

Its case rests on synology DSM is the best NAS operating system, clean UI, regular updates, deep app ecosystem and photos app replaces Google Photos for unlimited photo storage on your own hardware. One caveat, 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit.

Specs that matter

Key features

  • 2-bay (diskless)
  • Realtek RTD1619B processor
  • 1GB DDR4 RAM
  • Gigabit Ethernet
  • DiskStation Manager (DSM) OS
The trade-offs

Pros & cons

Pros

  • Synology DSM is the best NAS operating system, clean UI, regular updates, deep app ecosystem
  • Photos app replaces Google Photos for unlimited photo storage on your own hardware
  • Drive compatibility list is the most comprehensive in the industry
  • SMB and NFS sharing work with Windows, Mac, and Linux without configuration
  • Active Backup for Business and Hyper Backup available for free

Cons

  • 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit
  • 2-bay limits expansion, RAID 1 uses both bays for redundancy, leaving no room for growth
Fit check

Should you buy the Synology DS223j 2-Bay NAS?

Think twice if this matters to you

  • 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit
  • 2-bay limits expansion, RAID 1 uses both bays for redundancy, leaving no room for growth
Where it ranks

Featured in 1 best-of list

ListRank
Best NAS Devices 2026· Best Overall#1 / 4
Cross-shop

Alternatives to the Synology DS223j 2-Bay NAS

Products ranked near it in our research, each better for a slightly different buyer.

Buying advice: nas devices

  1. Two bays allow mirroring; more bays add capacity.
  2. Stronger CPUs help with media transcoding.
  3. Ecosystem apps add features.
  4. 2.5GbE improves speed.
  5. Use cloud or external backups.

Read the full guides

Answers

Synology DS223j 2-Bay NAS: common questions

Is the Synology DS223j 2-Bay NAS worth buying?

Yes, for the right buyer. The Synology DS223j 2-Bay NAS ranks #1 in our Best NAS Devices 2026 list (best overall). Its biggest strength: synology DSM is the best NAS operating system, clean UI, regular updates, deep app ecosystem. The main caveat: 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit.

Who is the Synology DS223j 2-Bay NAS best for?

Based on our research it suits buyers who want the best overall package. It's ranked #1 of 4 in our Best NAS Devices 2026 list.

What are the downsides of the Synology DS223j 2-Bay NAS?

The main trade-offs owners and reviewers point to: 1GB RAM limits transcoding capability, 4K transcoding requires a more powerful unit; 2-bay limits expansion, RAID 1 uses both bays for redundancy, leaving no room for growth.

What are the key features of the Synology DS223j 2-Bay NAS?

2-bay (diskless), Realtek RTD1619B processor, 1GB DDR4 RAM, Gigabit Ethernet and DiskStation Manager (DSM) OS.

What are the best alternatives to the Synology DS223j 2-Bay NAS?

Worth comparing: Synology DS923+ 4-Bay NAS, Western Digital My Cloud Home and QNAP TS-233 2-Bay NAS. Each ranks near it in our research for a slightly different buyer.

Where can I buy the Synology DS223j 2-Bay NAS?

It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.

How long does NAS initial setup take?

Initial hardware setup (installing drives, connecting to the router) takes 15-30 minutes. The DSM operating system installation and initial configuration wizard takes another 20-30 minutes. Total first-time setup is typically under one hour. After setup, the NAS creates storage pools and volumes which may take additional time depending on drive size.

Do I need to format hard drives before putting them in a NAS?

The NAS operating system (DSM for Synology, QTS for QNAP) formats and partitions the drives during the initial setup process. Installing new, unformatted drives is the correct procedure. If you are reusing drives that have existing data, the setup will erase that data, back it up before installing.

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