
Price history
Synology
Synology DS425+ 4-Bay Desktop NAS Enclosure
A four-bay desktop NAS that pairs a quad-core Celeron J4125 with a 2.5 GbE port and dual NVMe slots for faster everyday storage
$1,899.00*
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*Price sourced from Amazon.com. Last updated:Jul 30, 2026.Price and availability are subject to change.
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Overview
Key Features
New model of the Plus series with 4 bays and an Intel Celeron J4125 quad-core processor
· 2GB DDR4 Non-ECC SODIMM (upgradable to 6GB with an additional 4GB module)
· Supports new memory module: D4NS01-4G
· 1 × 2.5 GbE and 1 × 1 GbE RJ-45 LAN ports
· Two M.2 2280 NVMe slots for caching or storage pool creation
Specifications
Brand
Synology
Model
DS425+
Series
Plus series
Form Factor
4 Bay Desktop NAS
Processor
Intel Celeron J4125 quad-core
Included Memory
2GB DDR4 Non-ECC SODIMM
Maximum Memory
6GB (with additional 4GB module)
Supported Memory Module
D4NS01-4G
M.2 Slots
Two M.2 2280 NVMe (caching or storage pool)
Network Ports
1 x 2.5 GbE and 1 x 1 GbE RJ-45
Included Storage
16TB (Synology HAT3300-4T)
Frequently Asked Questions
Does the Synology DS425+ come with hard drives, or do I supply my own?
This configuration includes 16TB of storage using Synology's HAT3300-4T drives, so it arrives ready to populate rather than as a bare enclosure.
How much memory does the DS425+ support, and can I upgrade it?
It ships with 2GB of DDR4 non-ECC SODIMM and expands to 6GB total by adding a single 4GB D4NS01-4G module in the available slot.
What networking speeds does the DS425+ offer?
It has two RJ-45 LAN ports: one 2.5 GbE for faster throughput and one 1 GbE, so capable clients and switches can benefit from the quicker port.
Can I add NVMe SSDs to the DS425+?
Yes. Two M.2 2280 NVMe slots let you set up SSD caching or create a dedicated flash storage pool, depending on your workload.
What processor powers the DS425+?
An Intel Celeron J4125 quad-core processor, an entry-level low-power chip suited to file serving, backups, and light application workloads.
How many drive bays does the DS425+ have?
Four bays, placing it in the mid-range desktop NAS class as the newest four-bay model in Synology's Plus series.