Synology DS925+ Review - Australian Pricing and Verdict

Verdict

The Synology DS925+ is the 4-bay NAS to buy in Australia for small businesses and serious home power users. The AMD Ryzen V1500B with ECC RAM, dual 2.5GbE, M.2 NVMe caching, and DX525 expandability make it the most capable compact desktop NAS in Synology's current lineup. At $995-$1,029, it is not an impulse purchase. But for anyone running Active Backup, Synology Drive, Docker, or Plex alongside other services, the DS925+ delivers the performance and reliability to justify the price.

If your needs are simpler, the DS425+ at $848 runs the same software and saves money. If you want more hardware flexibility and are comfortable with a steeper learning curve, the QNAP TS-464 at $999 is a strong alternative. But if you want the most polished NAS experience with genuine SMB capability in a 4-bay form factor, the DS925+ is the one to get. Browse the full Synology lineup ranked for other options.

Against the 2-bay DS725+, the choice comes down to core count versus clock speed. The DS725+ runs a faster-clocked AMD Ryzen R1600 (2-core/4-thread, 2.6 GHz base, 3.1 GHz turbo) and has one 2.5GbE port plus one 1GbE port, but only 2 bays. It does not provide 10GbE. The DS925+'s V1500B trades that per-core clock speed for double the cores and threads (4C/8T at a fixed 2.2 GHz), two more native bays, and symmetric dual 2.5GbE - better suited to running several services (Docker, Active Backup, Synology Drive) at once rather than one fast single-threaded task. If two bays and 10GbE matter more to you than core count, the DS725+ is the better fit; see our full DS925+ vs DS725+ comparison for the complete breakdown.

Who Should Buy the DS925+

The DS925+ is the right NAS if you are:

• A small business (5-50 employees) needing centralised backup, file sharing, and room to grow with the DX525
• A home power user running Plex alongside Docker containers, who needs the CPU headroom and ECC reliability Celeron-based models lack
• A prosumer or creative working with large files who benefits from dual 2.5GbE
• Upgrading from a DS918+ or DS920+. The DS925+ succeeds the DS923+ in Synology's four-bay Plus line. It is also a potential upgrade for DS918+ and DS920+ owners, adding native 2.5GbE; the DS920+ already has two built-in M.2 NVMe cache slots.

Who Should NOT Buy the DS925+

Don't buy the DS925+ if:

• You only need basic backup and file sharing. The DS425+ at $849 (Scorptec) has 4 bays, runs DSM, and handles home workloads. The $200+ premium for the DS925+ is wasted if you're not pushing the NAS with concurrent services.
• You want deep technical flexibility. The QNAP TS-464 at $999 offers more depth for technical users who want VMs, HDMI output, or a less locked-down OS.
• You need more than 4 bays now. The DS1525+ ($1,600-$1,759) gives you 5 bays natively without needing the $879 DX525.

Priced from $1,049 at Scorptec to $1,048 at Mwave (September 2026), the DS925+ slots between the consumer-focused DS425+ ($848-$999) and the 5-bay DS1525+ ($1,600-$1,759). If you run Plex, Active Backup for Business, Docker containers, or Synology Drive for a team of 10-20 users, the DS925+ has the CPU and ECC memory to handle it. At Scorptec's prices checked on 18 August 2026, the DS425+ was A$849 and the DS925+ was A$999, a A$150 difference. Don't overspend on hardware you won't use.

DS925+ Full Specifications

Australian Pricing and Where to Buy

Scorptec lists the DS925+ at A$999 and in stock as checked on 18 August 2026; confirm Mwave's live price before publication. PLE Computers does not stock the DS925+ at the time of writing. That $34 spread is typical. The meaningful difference between retailers is stock availability, pre-sales knowledge, and after-sales support, not the price tag.

Business and government buyers should always request a formal quote rather than paying the listed retail price. Resellers can request pricing support from their distributors (BlueChip and MMT both distribute Synology in Australia), and vendors sometimes provide additional discounts to close deals. Quoted pricing is often at or near sale pricing.

Performance: AMD Ryzen V1500B

The DS425+ uses an Intel Celeron J4125, while the DS923+ uses an AMD Ryzen R1600. The DS925+ uses the four-core, eight-thread Ryzen V1500B. Four Zen 1 cores with simultaneous multithreading (8 threads) handle concurrent workloads far more comfortably. Whether the V1500B can handle this combination smoothly depends on the concurrent workloads and configuration. The Celeron J4125 can do this too, but it shows strain under combined loads, particularly when Docker containers are in the mix.

For Plex users, the important caveat is that the V1500B has no hardware transcoding. Synology has not exposed GPU-based transcoding on its AMD Ryzen Plus-series models, including the DS925+. Direct Play depends on the client's support for the file's container, video, audio, subtitles, resolution and bitrate; unsupported combinations can trigger Direct Stream or transcoding. If a client can't Direct Play and forces a transcode, it runs entirely on the CPU, which will strain quickly under 4K or multiple concurrent streams. For remote streaming where upload bandwidth is the real constraint rather than compute, a lower-bitrate Direct Play-compatible file avoids transcoding altogether. Note that CGNAT on some Australian ISPs (particularly Aussie Broadband and TPG fixed wireless) blocks direct remote access. You'll need a static IP, VPN tunnel, or Plex Relay as a workaround.

ECC RAM: Why It Matters

ECC (Error-Correcting Code) memory detects and corrects single-bit errors in real time. On a NAS running 24/7 with RAID parity calculations, Btrfs checksumming, and database operations, an undetected memory error can silently corrupt data before it's written to disk. Standard non-ECC RAM lets these errors pass unnoticed. ECC substantially reduces this risk by correcting single-bit errors and detecting many uncorrectable errors, but it does not eliminate every possible memory-corruption failure. Particularly important for a device that manages your data around the clock.

The DS925+ ships with 4 GB DDR4 ECC, expandable to 32 GB across two slots. Synology's 8 GB ECC SODIMM is~$980 at Mwave. Expensive, but third-party DDR4 ECC SODIMMs can be sourced for less. For business deployments, use Synology-branded modules to maintain full support coverage. If you plan to run Docker, VMs, or Surveillance Station, upgrade to at least 8-16 GB. The default 4 GB becomes a bottleneck quickly once you layer on services.

Networking and Expansion Options

Two 2.5 GbE RJ45 ports support Link Aggregation (802.3ad LACP or ALB) for improved multi-client throughput or failover redundancy. With Link Aggregation, a single connection remains limited to one 2.5GbE link. For compatible SMB clients, DSM's separate SMB3 Multichannel feature can use both links to increase single-client throughput, but it cannot be enabled at the same time as Link Aggregation.

The DS925+ has no PCIe expansion slot, so there's no 10GbE upgrade path - networking is fixed at dual 2.5GbE, which you can link-aggregate for combined bandwidth or failover. If your workflow genuinely needs 10GbE (video editing with large file transfers, for example), you'll need a different model with a PCIe expansion slot.

M.2 NVMe Cache and Storage

Two M.2 2280 NVMe slots on the underside of the DS925+ can be configured as SSD read/write cache to accelerate random I/O. Beneficial for database workloads, VMs, and Synology Drive with many concurrent users. Alternatively, they can form a dedicated SSD storage pool separate from the main SATA array, useful for running Docker containers on fast NVMe while keeping bulk data on larger SATA drives.

DX525 Expansion

The DS925+ supports the DX525 expansion unit (~$1062 at Mwave), adding five 3.5"/2.5" bays via USB Type-C for a total of 9 bays. For a small business that starts with 4 drives and grows over 2-3 years, this avoids the cost and downtime of a full NAS migration. At $879, the DX525 is nearly as much as the NAS itself. Users who know they'll need more than 4 bays from day one should consider the 5-bay DS1525+ ($1,750 at Mwave, $1,759 at Scorptec) as a more cost-effective starting point.

Drive Compatibility and DSM 7.3

In April 2025, Synology locked all new Plus series models (including the DS925+) to Synology-branded or specifically certified drives. The community backlash was severe. Synology reversed course with DSM 7.3 in October 2025, restoring support for third-party 3.5" HDDs and 2.5" SATA SSDs from Western Digital, Seagate, and Toshiba. You can use Seagate IronWolf, WD Red Plus, or any mainstream NAS-class drive without restriction on the DS925+.

Two caveats remain: M.2 NVMe SSDs still require HCL-listed drives for new storage pools, and enterprise/rackmount models maintain stricter compatibility. The reputational damage is real. Synology lost trust with enthusiasts, and some of that won't come back quickly. But for the typical SMB or home buyer, the products remain strong and the reversal shows Synology will listen when they overstep. See our Synology NAS Australia guide for full brand context.

Software: DSM and Key Applications

DSM (DiskStation Manager) is a major part of the DS925+'s appeal. The web-based interface is clean, intuitive, and rarely overwhelming. For buyers who want a NAS that "just works," DSM delivers.

Active Backup for Business is the standout for SMB deployments. Active Backup for Business requires agents for Windows PCs and physical servers and provides agentless backup for file servers and VMware/Hyper-V virtual machines. Microsoft 365 uses the separate Active Backup for Microsoft 365 package and console. Active Backup for Business is license-free on compatible x64 Synology NAS models using Btrfs. Whether it can replace products such as Veeam or Acronis depends on the deployment's platform, retention, recovery and management requirements. Scheduled-backup performance and its impact on other services vary with endpoint workload, backup windows, storage configuration, network speed and concurrent services. Synology Drive turns the NAS into a private cloud with desktop and mobile sync. Ideal for businesses handling sensitive data (legal, medical, accounting). Docker runs well for self-hosted applications, while Virtual Machine Manager handles light VM workloads (upgrade RAM to at least 16 GB if VMs are part of your plan).

DS925+ vs DS425+ vs QNAP TS-464

Prices last verified: 10 March 2026. Always check retailer before purchasing.

The DS425+ was A$849 at Scorptec when checked on 18 August 2026. It runs the same DSM software and handles home workloads, It lacks PCIe and DX525 expansion, but it has two M.2 2280 NVMe slots for compatible SSD cache. The QNAP TS-464 at $999 matches the DS925+ on networking, ships with 8 GB RAM (vs 4 GB), adds HDMI 2.0, and offers more hardware per dollar. The Celeron N5095 trades blows with the Ryzen V1500B but lacks ECC. The TS-464 wins on features per dollar; the DS925+ wins on software polish, ease of use, and the DX525 expansion path. As covered in our best NAS Australia guide, the choice usually comes down to user capability and intent.

Warranty, ACL, and After-Sales in Australia

The DS925+ ships with a 3-year warranty, extendable to 5 years. In Australia, your warranty claim goes to the retailer. Synology has no service centre or office here. Warranty routing and turnaround times can vary by retailer, distributor, model and service arrangements. Advanced replacements are generally not available through the standard process, though some resellers will let you purchase a replacement and refund you when the faulty unit returns. Ask about this before you buy.

A NAS is not a backup. Plan for a 2-3 week replacement window as the realistic Australian timeline, and build your data protection strategy around the assumption that hardware will eventually fail. A 3-2-1 backup strategy (3 copies, 2 media types, 1 offsite) is the standard. Synology's Hyper Backup makes this straightforward with cloud destinations including Backblaze B2, AWS S3, and Synology C2.

Related reading: our AU retailer guide.

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See also: our complete Synology ecosystem guide.

See also: our complete Synology NAS Australia guide.

Related reading: our Synology DS425+ vs DS925+.

See also: our complete Synology ecosystem guide.