Synology NAS review and current prices
The DS925+ is Synology’s current expandable four-bay Plus model. Its Ryzen V1500B, 4GB ECC memory, dual 2.5GbE ports, two M.2 slots and DX525 support make it a strong general NAS, but its lack of an Intel Quick Sync path changes the Plex decision.
The short answer
Is the DS925+ worth the money?
Choose DS925+ when you value DSM, ECC memory, dual 2.5GbE, four bays and a nine-bay expansion path. It is better viewed as a capable storage and application server than as a guaranteed hardware-transcoding appliance.
What matters before buying: DS925+ improves CPU core count and built-in networking over DS923+, but it does not provide the Intel integrated-graphics route used by J4125 models. Direct-play media is straightforward; demanding real-time transcoding may call for external compute.
Shop the Synology DS925+
Synology DS925+ prices
Compare DS925+ offers before buying. Check the price of the diskless NAS against any bundle that includes drives.
At a glance
Which option makes sense for your setup?
Interactive decision tool
DS925+ Workload Fit Checker
Enter how you will use the NAS. The recommendation helps narrow the choices; always confirm exact hardware specifications, current compatibility and the final purchase price.
Buying guide
Everything to check before you buy
Compare the actual hardware, software support and total configured cost. The recommendations below apply to the models named in this guide.
DS925+ verdict: who should buy it?
The DS925+ is a strong four-bay choice for a household or small office that values Synology Drive, Photos, snapshots, dependable backups and faster local transfers. It uses a four-core/eight-thread AMD Ryzen V1500B, comes with 4GB DDR4 ECC memory and has two built-in 2.5GbE ports. Two M.2 slots and one DX525 expansion path provide further flexibility.
Choose it for storage and business applications rather than promising GPU-based local AI or easy hardware video transcoding. The published specification is not a substitute for performance testing under your own app mix, and a diskless price should not be compared directly with a drive-loaded bundle.
Four internal bays and the nine-bay expansion path
With four SATA bays, DS925+ gives a home office more RAID/SHR growth choices than a two-bay unit. Start with compatible CMR NAS drives sized for both current data and anticipated annual growth. SHR capacity depends on drive sizes and chosen fault tolerance; use Synology's calculator for a real configuration rather than adding drive labels together.
The DX525 can take the platform to nine total bays, but it is an optional extra. Confirm the correct expansion model, the target pool's risk characteristics and a separate backup plan. Expansion increases capacity but does not replace backups.
Is DS925+ fast enough for multiple users?
The Ryzen V1500B offers four cores and eight threads for file services, snapshots, backup tasks and multiple light-to-moderate packages. Built-in dual 2.5GbE can improve throughput over a single gigabit connection, particularly with multiple clients or capable networking equipment. Individual real-world speeds still depend on disks, RAID workload, switches, clients and protocol overhead.
If you need an officially supported 10GbE upgrade path, compare the DS1525/DS1825 options and the older DS923+ carefully rather than assuming a standard DS925+ offers the same card slot.
Plex and hardware transcoding limits
DS925+ can serve media files for direct playback, but its AMD Ryzen V1500B does not offer Intel Quick Sync. This matters when the client cannot decode the original file, when subtitles trigger processing, or when several remote streams need simultaneous conversion.
For an emphasis on hardware transcoding, review the Intel-based DS425+ or DS225+ and verify current Plex/Jellyfin implementation details. The presence of integrated graphics on another NAS does not guarantee every codec or resolution will be accelerated.
RAM, containers and virtual machines
The DS925+ ships with 4GB ECC and has a supported expansion path to higher capacities, subject to Synology's approved module combinations. Four gigabytes can cover straightforward file service and backup use, but multiple containers, indexing jobs or business apps may require more.
Check the memory required by the actual package stack and budget it with the enclosure. ECC can correct certain memory errors, but it cannot replace an application backup or protect against accidental deletion, ransomware or hardware failure elsewhere.
Drive and M.2 compatibility before ordering
DSM 7.3 broadened third-party HDD and 2.5-inch SATA SSD installation choices for 2025 DiskStation Plus devices. The change does not turn every drive into a tested combination or mean every NVMe SSD can be used as an M.2 storage pool. Synology's compatibility list and known-incompatible entries still matter.
Match each HDD's interface, capacity, model number and intended workload. For M.2 cache or storage pool use, check Synology's separate supported-SSD and platform guidance. Avoid accessory listings that say “compatible with DS925+” but do not include a NAS.
DS925+ versus DS925neo+ and DS923+
The DS925neo+ shares the CPU, bay count, networking and M.2 platform of DS925+ but starts with 4GB non-ECC rather than ECC RAM. If their prices are close, factory ECC favors DS925+. If the neo+ saving is material and you do not need ECC immediately, it deserves a look.
The older DS923+ instead trades newer built-in 2.5GbE for a different network-expansion approach and DX517 compatibility. Existing expansion hardware, a 10GbE requirement and the real delivered price can make it the rational choice despite its older CPU.
Common questions
Common questions answered
Is the DS925+ good for Plex?
It is good for direct play and ordinary media serving. It is not the clearest choice for frequent hardware transcoding because the Ryzen V1500B does not provide Intel Quick Sync.
How much RAM does DS925+ support?
Synology lists 4GB DDR4 ECC memory installed and a maximum capacity of 32GB using supported modules and recommended configurations.
Does DS925+ support 10GbE?
It has dual 2.5GbE built in. Unlike DS923+, it does not use the same E10G22-T1-Mini optional 10GbE upgrade path.
Can DS925+ use DX517?
The official expansion path for DS925+ is DX525. Do not assume a previous-generation DX517 is interchangeable.
Can I install third-party HDDs in DS925+?
With DSM 7.3, unlisted third-party HDDs and 2.5-inch SATA SSDs have greater installation flexibility on 2025 Plus systems, but they are not Synology-verified and may display an unverified status.
Can any NVMe SSD create a DS925+ storage pool?
Synology’s M.2 storage-pool guidance says to use compatible Synology M.2 SSDs for the exact NAS model.
What is the maximum bay count?
DS925+ has four internal bays and supports one DX525 five-bay expansion unit for a maximum of nine drive bays.
Is DS925+ faster than DS923+?
It has more CPU cores and faster built-in Ethernet. Real application performance still depends on storage, memory, network, services and client workload.
Does DS925+ include hard drives?
The standard enclosure is commonly sold diskless, but marketplace bundles may include drives. Check the exact listing rather than assuming.
Who should avoid DS925+?
Buyers whose main priority is frequent Plex hardware transcoding or an existing DX517/10GbE-mini investment should compare Intel-based or DS923+ alternatives carefully.
Synology specifications and compatibility
Specifications and compatibility guidance come from the Synology product and support documents linked below. Check current Amazon prices and the seller's description before ordering. A price marked as last checked on an earlier date may have changed.
- Synology current Plus-series comparison
- Synology DS925+ and DX525 announcement
- Synology drive compatibility policies for 2025+ systems
- Synology models supporting M.2 storage pools
- Synology Products Compatibility List
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