16GB max RAM · 2 bays · 2.5GbE
AINAS Score 28
No verified UK price
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Can the Synology DS1525+ run local AI?
The Synology DS1525+ can run small local models, with limits. Its AMD Ryzen V1500B and 32GB memory ceiling suit models up to the 14B class, with 32B class models a tight fit (Estimated), so treat it as a storage-first NAS that can host light AI tools.
There is no way to add a discrete GPU, so all inference runs on the CPU.
Local LLM support is confirmed by community reports.
What is the DS1525+ like?
The DS1525+ is Synology's five-bay model for 2025, with the same Ryzen V1500B as the DS925+ and DS1825+, 8GB of ECC memory expandable to 32GB, and a network upgrade slot for an optional 10GbE module. For local AI it is AI Capable: CPU-only, no graphics, no NPU and no GPU path.
The extra bay and the 10GbE option make it a better small-office server than the DS925+, and two expansion ports let it grow to 15 drives. Community guides show Ollama running in Container Manager on this CPU, with small models usable and 7B models slow.
The practical approach with this Synology is to let it do storage and use AI Console to connect it to a model running elsewhere, whether a cloud provider or a self-hosted server on your network. That keeps Synology's reliable backup and sharing tools while putting inference on hardware built for it. Buy it for storage that grows, not for running models.
Current UK offers
Amazon UK
DS1525+ 8GB ECC
£1,079.99
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Key specifications
- PCIe
- 1x PCIe Gen3 x2 network upgrade slot (optional E10G22-T1-Mini 10GbE RJ-45 module)
- Source: Manufacturer
- Docker
- Yes
- VM support
- Yes
- Released
- 2025
Can the DS1525+ run local LLMs?
Each capability shows how it was confirmed: Verified by AINAS, Vendor confirmed, Community confirmed or Unverified.
| Capability | Supported | Evidence | Note |
|---|---|---|---|
| Local LLM | Limited | Community confirmed | CPU-only Ollama via Container Manager; guides show small models (about 1B to 3B, 7B quantised slowly) on V1500B units. Needs RAM upgrade beyond base. |
| Ollama | Yes | Community confirmed | Not in Package Center; ollama/ollama container runs in Container Manager on DSM (CPU only). |
| Open WebUI | Yes | Community confirmed | Open WebUI container documented on Synology DSM pointing at Ollama on port 11434. |
| RAG | Limited | Unverified | No Synology local RAG for this model; Open WebUI document chat plausible via Docker but not verified on this unit. AI Console only bridges to cloud or OpenAI-compatible APIs. |
| AI search | No | Vendor confirmed | Synology AI Search in Drive uses GPU-powered embedding/OCR models only on supported systems with a GPU (FS/26-series list); this model is not listed. |
| GPU expansion | No | Vendor confirmed | No PCIe slot usable for a GPU; no OCuLink or USB4. |
| Hardware acceleration | No | Community confirmed | Ryzen V1500B has no integrated GPU and no NPU; no hardware transcoding or AI acceleration. |
| AI photos | Yes | Vendor confirmed | Synology Photos facial recognition and object recognition listed in product spec (on-device, CPU). |
| AI video | Limited | Community confirmed | No on-NAS deep video analytics (DVA models only); Surveillance Station can use edge AI from Synology BC500/TC500 cameras. |
| Surveillance AI | Yes | Vendor confirmed | Surveillance Station supported, up to 40 IP cameras (1080p H.264); 2 free licences, more require purchase. |
How much RAM does the DS1525+ support?
The DS1525+ ships with 8GB of DDR4 ECC SODIMM and supports up to 32GB with ECC. Upgrading to the maximum lifts the model ceiling from small models up to around 7B parameters to models up to the 14B class, with 32B class models a tight fit (both Estimated).
As a rule of thumb, a 4-bit model needs about 0.6GB per billion parameters plus room for context. After leaving around 8GB for the NAS operating system, 32GB leaves space for a model of roughly 40B parameters at most (Estimated).
ECC memory support is a plus for always-on systems that also hold important files.
Can you add a GPU to the DS1525+?
No. The DS1525+ has no PCIe slot or OCuLink port for a graphics card. Inference runs on the CPU, so keep to small models.
Is the DS1525+ suitable for RAG?
With limits. The DS1525+ can host a small RAG stack such as AnythingLLM or Open WebUI with a compact embedding model, but memory and compute restrict how large the answering model can be. It suits a personal document library more than a team knowledge base.
Networking is 2 x 2.5GbE. Fine for one or two users; indexing a large archive over the network will be slower.
Which DS1525+ configurations are sold?
| Configuration | RAM | SSD | Notes |
|---|---|---|---|
| DS1525neo+ 4GB non-ECC | 4GB | None | Variant on same spec page with 4 GB DDR4 non-ECC SODIMM |
| DS1525+ 8GB ECC | 8GB | None | 8 GB DDR4 ECC SODIMM (1x 8 GB), 2 slots, max 32 GB |
How is the DS1525+ different from the DS925+?
The closest Synology model by AINAS Score. Only the specifications that differ are listed.
- Memory fitted: 8GB on the DS1525+, 4GB on the DS925+
- Drive bays: 5 on the DS1525+, 4 on the DS925+
- Power supply: 120W on the DS1525+, 100W on the DS925+
- AINAS Score: 30 on the DS1525+, 29 on the DS925+
Who should buy the DS1525+?
The DS1525+ scores best for Home Lab (37/100) and Business (35/100). It suits home lab owners who want one box for storage, containers, media and a few AI services.
It is a weaker fit for buyers who expect to add a graphics card later and for teams moving large files over the network every day.
What are the alternatives to the DS1525+?
Other AI Capable systems closest in price.
DS1525+ questions
Can the DS1525+ run Ollama?
Yes. Ollama support is confirmed by community reports. See the capability table above for the source.
Does Open WebUI work on the DS1525+?
Yes. Open WebUI support is confirmed by community reports. See the capability table above for the source.
Does the DS1525+ do AI photo recognition?
Yes. AI photos support is documented by the manufacturer. See the capability table above for the source.
Can the DS1525+ run AI surveillance?
Yes. Surveillance AI support is documented by the manufacturer. See the capability table above for the source.
Does the DS1525+ have hardware AI acceleration?
No. Hardware acceleration support is confirmed by community reports. See the capability table above for the source.
How fast is the DS1525+'s network?
It has 2 x 2.5GbE built in, and the 1x PCIe Gen3 x2 network upgrade slot (optional E10G22-T1-Mini 10GbE RJ-45 module) can take a faster network card. The fastest port is 2 x 2.5GbE.
Where do these specifications come from?
Every field records its source. Specifications were last checked on . Spot an error? Send a correction with a manufacturer link.