£4,840.99

Stock Available: 0
  • Compact 4-bay
  • Speedy storage
  • Versatile applications

2.5GbE connectivity and diverse storage options
The DS425+ features built-in 2.5GbE networking and supports both SATA SSDs and HDDs in 2.5"/3.5" internal bays, as well as M.2 NVMe drives via M.2 slots for use cache.

Private cloud for seamless data access
Streamlined file management and collaboration
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.

A private photo storage and management solution
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.

Boost team productivity with collaborative tools
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

NAS-to-NAS synchronization
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.

Cloud-powered multi-site syncing
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.

Sync to public cloud providers
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

Back up PCs, smartphones, cloud apps, and more
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.

Comprehensive and flexible Synology system backups
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.

Tamper-proof protection with immutable snapshots
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

Synology Surveillance Station
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.

Dual recording to the cloud
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.

Performance backed by Synology drives
Designed for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.

Supercharge your setup with Synology router
Pair your NAS with Synology RT6600ax or WRX560 to maximize 2.5GbE connectivity. Enjoy high-speed transfers and secure your network with VLANs, threat prevention, and web filtering — all through a familiar Synology interface.

Storage
Storage drives installed Yes
Total installed storage capacity 16 TB
Number of storage drives installed 4
Number of storage drives supported 4
Installed storage drive type HDD
Supported storage drive types HDD & SSD
Storage drive capacity 4 TB
Supported storage drive interfaces M.2, Serial ATA
Storage drive sizes supported 3.5,M.2,2.5
Maximum supported storage capacity 80 TB
Number of M.2 (M & B) slots 2
RAID support Yes
RAID levels 0, 1, 5, 6, 10, JBOD
Hot-swap drive bays Yes
Supported file systems BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4
Processor
Processor manufacturer Intel
Processor family Intel® Celeron®
Processor model J4125
Processor frequency 2 GHz
Processor boost frequency 2.7 GHz
Processor cores 4
Memory
Internal memory 2 GB
Internal memory type DDR4
Maximum RAM supported 6 GB
ECC No
Memory slots 1
Network
Ethernet LAN Yes
Ethernet LAN data rates 2500 Mbit/s
Wake-on-LAN ready Yes
Ports & interfaces
Ethernet LAN (RJ-45) ports 2
USB port Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2
Design
Cooling type Active
Product colour Black
Number of fans 2 fan(s)
Fan diameter 2 9.2 cm
Fan diameter 9.2 cm
Drive bay locking Yes
LED indicators Yes
Performance
Type NAS
Device class Home & Home Office
Backup function Yes
Backup features Cloud, iSCSI LUN
Multilingual support Yes
Number of users 512 user(s)
Noise level 21.6 dB
Snapshot Yes
Web-based management Yes
System log Yes
Access Control List (ACL) Yes
On/off switch Yes
Power
Power supply location External
Power supply unit (PSU) capacity 90 W
Power consumption (typical) 28.25 W
Power consumption (HDD standby) 6.1 W
AC input voltage 100 - 240 V
AC input frequency 50 - 60 Hz
General
Product family DiskStation
Weight & dimensions
Width 199 mm
Depth 223 mm
Height 166 mm
Weight 2.18 kg
Packaging content
External power adapter Yes
Cables included AC, LAN (RJ-45)
Power cables quantity 1
Operational conditions
Operating temperature (T-T) 0 - 40 °C
Operating relative humidity (H-H) 5 - 95%
Storage relative humidity (H-H) 5 - 95%
Storage temperature (T-T) -20 - 60 °C
Other features
Compliance certificates RoHS