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Synology 5 Bay Nas Diskstation Comparison - April 2026
| 1 Best Choice  9.8Exceptional | 2 Best Value  9.6Exceptional | 3  9.5Excellent | 4  9.4Excellent | 5  9.3Excellent |
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ModelSynology DS923+ 4-Bay Diskstation NAS (AMD Ryzen™ 4 Threads R1600 Dual-Core 4GB Ram 2xRJ-45 1GbE LAN-Port) | Model Synology 4-Bay DiskStation DS423 (Diskless) | Model Synology 6 bay 2.5" NAS DS620slim (Diskless) | Model Synology 2-Bay NAS DS223 (Diskless) | Model Synology 5-Bay Expansion Unit DX525 (Diskless) |
BrandSynology | Brand Synology | Brand Synology | Brand Synology | Brand Synology |
Reviews | Reviews | Reviews  | Reviews | Reviews - |
Tech Specs | ||||
product dimensions8.78 x 7.83 x 6.54 inches | product dimensions 9 x 6.6 x 7.24 inches | product dimensions 6.89 x 5.94 x 4.76 inches | product dimensions 6.5 x 4.25 x 9.17 inches | product dimensions - |
item weight8.05 pounds | item weight 4.87 pounds | item weight 3.08 pounds | item weight 2.82 pounds | item weight - |
item dimensions lxwxh- | item dimensions lxwxh 9 x 6.6 x 7.24 inches | item dimensions lxwxh 6.89 x 5.94 x 4.76 inches | item dimensions lxwxh 6.5 x 4.25 x 9.17 inches | item dimensions lxwxh - |
color- | color Black | color white | color Black | color - |
Review- | Review - | Review | Review - | Review - |
Available On | Available On   | Available On  | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.8
1SynologySynology DS923+ 4-Bay Diskstation NAS (AMD Ryzen™ 4 Threads R1600 Dual-Core 4GB Ram 2xRJ-45 1GbE LAN-Port)
Why we love it
Compact: Powerful in small size
Consolidate: 50TB of storage
Protect: Keep data safe
Main highlights- The performance you need Reduce transfer times with DS923+, designed to accelerate your workloads. Easily add faster networking and NVMe drives to further boost performance.
- Stunningly compact Powerful functionality in a tiny package, with room for 10GbE and dual NVMe drives.
- Store, share, and protect Manage all your documents, photos, and other files, back up applications and devices, and protect your physical assets with professional video surveillance.
- Keep your data safe Hardware and software engineered to protect your data — trusted by millions.
- Consolidate and share Flexibly store and organize 50 TB of data, then share with anyone.
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9.6
2Synology
Synology 4-Bay DiskStation DS423 (Diskless)
Why we love it
Secure remote access
Backup snapshots
Monitor protect home/biz
Main highlights- Versatile video surveillance - Protect your home or business with intuitive monitoring, archiving, and analysis tools for up to 30 IP cameras (need to purchase camera license separetly)
- Secure private cloud - Safely access and share files and media from anywhere, and keep friends, partners, or collaborators on the same page
- Comprehensive data protection - Back up your media and documents to multiple destinations, and leverage snapshots to protect against malware
- Check Synology knowledge center or YouTube channel for help on product setup and additional information
- 2-year warranty
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9.5
3Synology
Synology 6 bay 2.5" NAS DS620slim (Diskless)
Why we love it
Compact design with powerful performance.
Supports multiple RAID configurations.
Reliable software with superior functionality.
Main highlights- Mini-sized yet powerful 6-bay NAS, ready to maximize your work productivity
- Dual-channel H. 265/H. 264 4K video transcoding on the fly
- Advanced Bars file system, offering 65, 000 system-wide snapshots and 1, 024 snapshots per shared folder.Maximum Single Volume Size:108 TB
- 6 Drive Bays with better RAID flexibility to configure 2. 5” HDDs and SSDs; over 220 MB/s reading and 190 MB/s writing even under encrypted data transmission
- 2GB DDR3L memory, expandable up to 6GB
Our ranking system
At bestchoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
