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DiskStation DS925+
Flexible storage for everything from home office to edge

Synology Products
Synology DiskStation
Synology DiskStation DS925+ 4 Bay SAN/NAS Storage System
#DS925+
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Overview:

Versatile 4-Bay Storage Solution with Expandable Capacity

The Synology DS925 is a capable 4-bay NAS solution that can adapt to growing storage demands. With support for up to nine drives with expansion unit1 , two M.2 NVMe slots for caching 2 and built-in 2.5GbE.


Consolidate and store your growing digital data

Flexibility Icon

4-bay with expansion

Up to 180 TB of raw storage with expansion unit

Performance Icon

High-speed storage

Two built-in 2.5GbE ports and over 522/565 MB/s sequential read/write

Settings Icon

Versatile applications

Back up multiple endpoints, manage 40 IP cameras, or safely sync and share files across sites


2.5GbE connectivity and diverse storage options

The DS925+ features built-in 2.5GbE networking and supports both SATA flash drives and HDDs in 2.5"/3.5" internal bays, as well as M.2 NVMe drives via M.2 slots for use as either cache or storage pools.


Up to
522/565 MB/s
read/write

Built-in dual
2.5GbE
ports

2 x M.2
NVMe
cache


Expand capacity for evolving needs

Consolidate your data with up to 80 TB of raw storage across 4 bays. Need more space? Add capacity with the DX525 for up to 180 TB of total raw storage.


4 bays
80 TB


9 bays
180 TB

Features:

Store, share, and protect

Manage all your documents, photos, and other files, back up applications and devices, or protect your assets with professional video surveillance.


Private cloud for seamless data access

Store, sync, access, and share data from any device, wherever you are. Work seamlessly between different platforms and devices, and access your files through mobile apps, desktop clients, and a browser-based interface. Quickly and easily roll back files in case of accidental deletion, mistakes, malware, etc., with versioning.
Effortlessly back up and organize photos, videos, and other visual assets using intuitive management tools. Automatically organize your content into albums and create secure share links for stakeholders and teammates.
Enhance workplace collaboration with Synology's productivity solutions. Create, edit, and share documents across teams in real time. Host an on-premises mail server to provide web-based email access while maintaining full data ownership. Additionally, stay connected through secure one-on-one chats, public channels, encrypted private channels, and group conversations.

Multi-site synchronization to empower global workflows

Improve workflow efficiency and team alignment across data sites with automatic one- or two-way site-to-site syncing. Files and folders are kept up-to-date across sites, so everyone stays aligned, whether at home, in the office, or across different branches — all while maintaining full control of your data.
Empower global workflows with high-speed access to data from anywhere in your network. Our hybrid cloud solution caches frequently used files locally for rapid access, while less frequently accessed data is stored in the cloud, reducing your on-site storage requirements.
Automatically keep data in sync between Synology NAS and major cloud providers, including BackBlaze B2, Dropbox, Google Drive, and Microsoft OneDrive. Multiple protocol support, client-side encryption, and customizable sync and bandwidth controls enable efficient storage management across various platforms.

Comprehensive data backup, protection, and recovery solutions

Consolidate and automate backup tasks for PCs, file servers, VMs, SaaS applications, and more. Administer device backups remotely through a centralized portal and quickly restore specific files or entire devices to keep your business up and running. Take advantage of built-in backup solutions designed to protect your data with seamless 3-2-1 backup configurations.
Protect all data, applications, and configurations on your Synology systems with comprehensive scheduled backups, including bare-metal backups, to local and remote servers, external drives, or cloud storage destinations, including Synology C2 Storage.
Safeguard critical LUNs and shared folders with automated immutable snapshots backed by custom retention policies. Built-in support for offsite replication further ensures robust business continuity.

Smart surveillance

Protecting your business has never been easier, with centralized management, support for over 8,700 IP camera models, and remote monitoring and playback. Synology’s scalable video management system provides all the tools you need for live monitoring, investigation, management, and backup.
Secure your surveillance footage with robust cloud backup that supports end-to-end encryption. Our cloud-based surveillance backup solution safeguards your Surveillance Station recordings, allowing you to access, view, share, and download footage through a convenient web portal. Ensure your data remains available even if your on-premises system is compromised.

Centralized monitoring and management

Monitor and manage your Synology fleet from a central interface, on-prem or in the cloud.


Central Management System

Manage Synology servers from a central console using group policies, task delegation, batch updates, and more.

Active Insight

Monitor your global Synology fleet's performance, backup status, login activity, and more with the power of the cloud.

Specifications:

DS220+ Hardware Specs

CPU

CPU Model AMD Ryzen V1500B
CPU Core 4
CPU Architecture 64-bit
CPU Frequency 2.2 GHz
Hardware Encryption Engine

Memory

System Memory 4 GB DDR4 ECC SODIMM
Total Memory Slots 2
Maximum Memory Capacity 32 GB (16 GB x 2)
Notes
  • Synology reserves the right to replace memory modules with the same or higher frequency based on supplier's product life cycle status. Rest assured that the compatibility and stability have been strictly verified with the same benchmark to ensure identical performance.
  • Please select Synology memory modules for optimum compatibility and reliability. Synology will not provide complete product warranty or technical support if non-Synology memory modules are used for memory expansion.
  • For multi-module memory configurations, all modules must be identical and share the same model number. Check the Product Manual of your Synology product for recommended memory configurations.

Storage

Drive Bays 4
Maximum Drive Bays with Expansion Unit 9 (DX525 x 2)
M.2 Drive Slots 2 (NVMe)
Compatible Drive Type* (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA HDD
  • M.2 2280 NVMe SSD
Maximum Single Volume Size* 108 TB
Hot Swappable Drive
Notes
  • The hot swappable drive feature is not supported by M.2 SSD slots.
  • Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.

External Ports

RJ-45 2.5GbE LAN Port 2
USB 3.2 Gen 1 Port 2
Expansion Port 1
Expansion Port Type USB Type-C

Appearance

Size (Height x Width x Depth) 166 mm x 199 mm x 223 mm
Weight 2.26 kg

Others

System Fan 92 mm x 92 mm x 2 pcs
Fan Speed Mode
  • Full-Speed Mode
  • Cool Mode
  • Quiet Mode
Brightness Adjustable Front LED Indicators
Power Recovery
Noise Level* 20.5 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 100 watts
120 watts*
AC Input Power Voltage 100 V to 240 V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption* 37.91 watts (Access)
12.33 watts (HDD Hibernation)
British Thermal Unit 129.27 BTU/hr (Access)
42.05 BTU/hr (HDD Hibernation)
Notes
  • For more information on how power consumption is measured, refer to this article.
  • Noise testing was conducted with the Synology system fully installed with Synology SATA HDDs and in an idle state. Two GRAS 40AE microphones are placed at a 1 m distance from the front and rear of the device. Background noise: 16.49-17.51 dB(A); Temperature: 24.25-25.75˚C; Humidity: 58.2-61.8%

Temperature

Operating Temperature 0°C to 40°C (32°F to 104°F)
Storage Temperature -20°C to 60°C (-5°F to 140°F)
Operating humidity 8% to 80% RH
Relative Humidity 5% to 95% RH

Certification

  • UKCA
  • BIS
  • EAC
  • VCCI
  • CCC
  • RCM
  • KC
  • FCC
  • CE
  • BSMI

Warranty

3-year hardware warranty, extendable to 5 years with Extended Warranty Plus
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt.
  • Extended Warranty Plus is only available in Europe and North America. Refer to the Extended Warranty Plus website for details on supported countries/regions

Environment

RoHS Compliant

Packaging Content

  • Main Unit X 1
  • Accessory Pack X 1
  • AC Power Adapter X 1
  • AC Power Cord X 1
  • RJ-45 LAN Cable X 2

Optional Accessories

DDR4 ECC SODIMM: D4ES04-4G/D4ES03-8G/D4ES03-16G
Expansion Units: DX525
Enterprise Series 3.5" SATA HDD: HAT5300 Series
Plus Series 3.5" SATA HDD: HAT3300 Series
Enterprise Series 2.5" SATA SSD: SAT5200 Series
Enterprise Series M.2 2280 NVMe SSD: SNV3400 & SNV5400 Series

Documentation:

Download the Synology DiskStation DS925+ Datasheet  (PDF).

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Warranty Icon

Extended protection with Extended Warranty

Add an additional two years to your standard three-year limited hardware warranty and gain access to premium services that accelerate recovery in the event of a disaster.

Pricing Notes:

Synology Products
Synology DiskStation
Synology DiskStation DS925+ 4 Bay SAN/NAS Storage System
#DS925+
Our Price: Request a Quote