Synology DS925+: Quad-Core Ryzen, Dual 2.5GbE and NVMe Cache — A Four-Bay NAS Sweet Spot
Official announcement republished verbatim (not rewritten or translated); source linked on this page.（Original language：English）
"The 4-bay Plus Series models inherited over one million installations, and have always been among our most widely-adopted products." said Jeffrey Huang, product manager of Synology. "Not only are they favored by professionals, but also deployed by enterprises in remote and branch environments as edge servers. For this reason, we've designed the DS925+ to deliver business-grade performance and reliability."
Compact, Powerful, and Ready to Grow with You
The Synology DS925+ is a high-performance data storage solution designed to handle everything from personal backups to demanding media libraries – all in a space saving design. Equipped with dual 2.5GbE ports and two M.2 slots for creating all-flash storage pool or cache, the DS925+ delivers substantial performance gains with preconfigured settings compared to its predecessor—including 149% faster SMB downloads, 150% faster uploads, 131% faster reads, and 150% faster writes – perfect for your small business, home office, family photos, video collections, device backups, and more.
Whether you're a content creator, small business owner, or simply in need of more space for your growing digital life, the DS925+ also provides high capacity and scalability. When paired with the new DX525 expansion unit, it supports up to nine drive bays and offers up to 180 TB of raw capacity.
The DS925+ is optimized for use with the Synology Plus Series hard drives, delivering long-term performance and reliability. The Plus Series hard drives undergo over 7,000 hours of testing to ensure they meet rigorous performance standards for reliable data storage. For optimal integration and long-term dependability, DiskStation Manager (DSM) on the DS925+ requires compatible hard drives for installation that follow a carefully curated drive compatibility framework. 1
Smart Features to Streamline Your Digital Life
Powered by Synology's DiskStation Manager (DSM), the DS925+ offers powerful tools to help you stay organized, secure, and connected:
The DS925+ and DX525 expansion unit will be available starting June 4 th , 2025, through Synology's network of partners and resellers. For more information, please see the DS925+ and DX525 product pages.
1 Synology intends to continuously update the Product Compatibility List. A third-party validation program is available upon request, allowing drive manufacturers to test their products using the same rigorous standards applied to Synology drives for certification.
Staying at the forefront of data management, Synology innovates and adapts to ever-evolving technologies, and continues bringing new possibilities to the table, including but not limited to solutions for data storage and backup, file collaboration, video management, and network infrastructure – all designed with one goal in mind – presenting a centralized platform to simplify IT administration while driving digital transformation for businesses worldwide.
Specifications
- Processor
- AMD Ryzen V1500B (4C/8T)
- Memory
- 4GB DDR4 ECC (up to 32GB)
- Storage
- 4 drive bays + 2x M.2 NVMe
- Networking
- Dual 2.5GbE
- Expansion
- With DX525: up to 9 bays · ~180TB
- Announced
- 2025-06-04
- Price (official)
- ~US$639.99 (diskless); per Synology's regional sites
Sources
Specs and launch info are cited from official sources; the analysis is our own original writing.
Synology announced the DiskStation DS925+ on its official site. The opinions and analysis here are our own; specs are cited from Synology's official page (see sources below).
Key features: the DS925+ uses an AMD Ryzen V1500B quad-core (8-thread) CPU with 4GB DDR4 ECC memory (expandable to 32GB). Storage is four 3.5" bays plus two built-in M.2 NVMe slots (for cache or a storage pool), and networking moves up to dual 2.5GbE. Via a DX525 expansion unit, total capacity scales to 9 bays and up to ~180TB. Synology lists the diskless model at about US$639.99, announced June 4, 2025.
Our take: the DS925+ is a well-balanced upgrade for home and small-office use. Two changes stand out: first, networking finally reaches dual 2.5GbE, so simultaneous multi-user access, media editing and large-file backups are far smoother than on 1GbE-bound older units; second, the M.2 NVMe slots aren't just cache — they can now form an all-SSD storage pool, great for VMs or hot data. The Ryzen V1500B with ECC memory balances multitasking and data integrity. Two honest caveats, though: first, 2.5GbE is not 10GbE — heavy video workstations chasing top speed should look at higher-end models; second, Synology has recently pushed a "compatible drive list" policy on some Plus units, and pairing non-Synology-certified drives can limit or warn on certain features (storage health analytics, dedup). Verify the DS925+ compatible-drive rules for your region before buying. In short: for a quiet, capable four-bay NAS that'll stay sufficient for years, the DS925+ fits — just confirm your drive list and expansion path first.
An honest note: some Synology Plus models apply a compatible-drive list, and non-certified drives may limit or warn on certain features — defer to the official compatibility page for your region. Pricing, availability and expansion accessories follow Synology's regional sites.
Pros
- Dual 2.5GbE smooths multi-user and large-file access
- Two M.2 NVMe slots for cache or an all-SSD pool
- Ryzen V1500B with ECC balances multitasking and data integrity
Cons
- 2.5GbE isn't 10GbE — top-speed video work needs higher-end models
- Plus-line compatible-drive policy may limit features with non-certified drives
- ~US$639.99 diskless — total cost adds up with drives
Discussion