Synology DS225+ Review: Can a 2-Bay NAS Offer 2.5GbE Speed?
The Synology DS225+ delivers centralized storage and backup with a surprising 2.5GbE port, making it a compelling choice for home offices and small businesses seeking data control.
By Elvis Dicki
Updated October 20, 2026
The Synology 2-Bay DiskStation DS225+ (Diskless) is a compact network-attached storage (NAS) device designed for users consolidating data from cloud services or external drives. It targets home offices and small businesses needing a reliable, centralized hub for file management, cross-platform backups, and surveillance. For those prioritizing data ownership and streamlined management, the DS225+ offers a robust, software-rich ecosystem in a small footprint.
At its core, the DS225+ provides a secure, private alternative to public cloud storage, leveraging Synology’s mature DiskStation Manager (DSM) operating system. The bottom line: this NAS excels at bringing enterprise-grade data protection and management tools to environments where simplicity and reliability are paramount.
Synology DS225+ 2-Bay NAS DiskStation for Data
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Synology DS225+ at a Glance
| Specification | Detail |
|---|---|
| Model | Synology DS225+ |
| Drive Bays | 2 |
| Processor | Intel Celeron J4125 Quad-Core |
| Memory | 2 GB DDR4 (Expandable to 6 GB) |
| Network Port | 1 x 2.5GbE |
| Maximum Raw Capacity | 40 TB |
| Sequential Throughput | Up to 282 MB/s read, 217 MB/s write |
| Operating System | Synology DiskStation Manager (DSM) |
| Warranty | 3-Year Limited |
| Dimensions (H x W x D) | 165 mm x 108 mm x 232.2 mm |
Design and Build
The Synology DS225+ features a compact, black enclosure constructed from metal and plastic, measuring 165 mm by 108 mm by 232.2 mm. This tabletop design is intended for 24/7 operation in space-constrained environments like home offices or small business settings. The build prioritizes a balance of durability and efficient cooling for its internal components. Its energy-efficient profile is a noted feature for continuous operation. The physical design supports the practical goal of centralized, always-accessible storage without demanding significant desk or shelf space.
Performance and Features
Hardware and Connectivity
Powered by an Intel Celeron J4125 quad-core processor and 2 GB of DDR4 memory (expandable to 6 GB), the DS225+ is built for multitasking within its target scope. A key hardware differentiator is its single 2.5GbE network port, which offers potential for faster file transfers compared to standard Gigabit Ethernet, aligning with its stated sequential throughput of up to 282 MB/s read and 217 MB/s write. This connectivity supports stable data transfers for the centralized storage and backup tasks it is designed to handle.
Storage and RAID
The two drive bays support a maximum raw storage capacity of 40 TB. Synology Hybrid RAID (SHR) is a central feature, allowing for flexible drive setup and the ability to upgrade drives one at a time, even with different capacities, without data loss or downtime. This simplifies storage management and future expansion within the two-bay constraint. The manufacturer emphasizes compatibility with drives on its official list, a result of extensive reliability testing.
Software and Security Ecosystem
The true value of the DS225+ lies in Synology DiskStation Manager (DSM), the intuitive operating system that provides a comprehensive suite of tools. This includes Synology Drive for private cloud file access and syncing, robust cross-platform backup for Windows, macOS, and mobile devices, photo management, and surveillance station capabilities. Built-in security features such as encryption, two-factor authentication (2FA), and firewall rules are integral to the package, offering layered protection for stored data. The system enables multi-platform access while maintaining 100% data ownership.
Setup, Support and Ownership
The DS225+ ships diskless, meaning users must purchase and install compatible hard drives or SSDs separately. Setup is facilitated by the DSM software, which is noted for its fast setup and intuitive interface. The device is backed by a 3-year limited hardware warranty from Synology. For demanding workloads, the base 2 GB of RAM may require upgrading to the maximum supported 6 GB, which is a user-accessible operation. The compact design and Synology’s ecosystem are geared toward straightforward ownership, though the two-bay architecture inherently limits physical expansion compared to models with more bays. Support and updates are managed through the DSM platform.
What Owners Say
Owner feedback indicates a high level of satisfaction, reflected in the product’s strong rating. The majority of reviews are highly positive, with a significant portion awarding the highest rating. Feedback frequently highlights the reliability, intuitive software, and the value of moving from cloud services to a private server. Critical reviews exist but form a smaller portion of the total. The consensus from owners aligns with the product’s positioning as a reliable and capable solution for centralized data management.
Pros and Cons
Pros
- Comprehensive, intuitive DSM software with extensive app ecosystem
- 2.5GbE port enables faster network transfers
- Compact, energy-efficient design ideal for small spaces
- Synology Hybrid RAID allows flexible drive upgrades
- Strong built-in security and cross-platform backup tools
- Proven reliability from extensive hardware testing
Cons
- Ships without drives, requiring separate purchase
- Only two drive bays limit future storage expansion
- Base 2 GB RAM may need upgrading for demanding tasks
- Maximum raw capacity is capped at 40 TB
Who Should Buy It (and Who Should Skip It)
The Synology DS225+ is an excellent fit for home offices, small businesses, and tech-savvy individuals seeking to centralize data, establish a robust backup system, and move away from recurring cloud service fees. It’s ideal for those who value data ownership, need cross-platform compatibility, and appreciate the extensive software features of DSM. Users with existing network infrastructure that can leverage the 2.5GbE speed will find particular benefit.
This NAS is not the best choice for users who anticipate needing massive storage expansion beyond 40 TB in the future, as the two-bay design is a hard limit. Those with primarily video editing or other high-bandwidth, multi-user workloads might find the hardware constraints limiting. Organizations requiring extensive enterprise server capabilities should look at larger Synology models or other solutions.
Final Verdict
The Synology DS225+ successfully packages powerful data management and protection into a compact, two-bay device. Its inclusion of a 2.5GbE port is a forward-looking feature that enhances its performance ceiling for file transfers. The synergy between the reliable hardware and the mature DSM software ecosystem is its greatest strength, offering tools for backup, synchronization, and security that are typically found in more expensive systems. For its target audience, it represents a significant step up in data control and capability from scattered external drives or cloud subscriptions.
While the diskless nature adds to initial cost and setup, and the two-bay design dictates a finite expansion path, these are reasonable trade-offs for the intended use case. The DS225+ stands out as a refined solution for securing and managing digital assets. It proves that a well-designed 2-bay NAS can be a cornerstone of a modern, secure digital workflow for individuals and small teams. For more insights on building a secure tech environment, explore our tech gear reviews and cybersecurity guides.
FAQs
Does the Synology DS225+ come with hard drives?
No, the Synology DS225+ is sold as a diskless unit. You must purchase compatible 2.5-inch or 3.5-inch SATA hard drives or SSDs separately and install them yourself. Synology provides a compatibility list for recommended drives to ensure optimal performance and reliability.
What is the advantage of the 2.5GbE network port?
The 2.5 Gigabit Ethernet port offers up to 2.5 times the potential bandwidth of a standard 1 Gigabit port. This can significantly accelerate file transfer speeds between the NAS and other devices on your network, provided your computer, switch, or router also supports 2.5GbE or higher speeds. It future-proofs the device for faster networking standards.
Can I use the DS225+ for video surveillance?
Yes, Synology’s Surveillance Station application is included with the DS225+, allowing it to manage multiple IP cameras. You can record, monitor, and manage footage directly on the NAS. The number of cameras and recording quality supported will depend on the drive configuration, available storage, and the specific camera streams.
How does Synology Hybrid RAID (SHR) work?
Synology Hybrid RAID is a simplified RAID management system. It allows you to create a storage pool with drives of different sizes, maximizing usable capacity. A key benefit is the ability to replace smaller drives with larger ones later, expanding the total storage without data loss or needing to rebuild the entire array from scratch, which is ideal for gradual upgrades.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.