£1,269.99

Stock Available: 0
  • Up to 432 TB of raw storage with expansion unit
  • Two built-in 2.5GbE ports,over 2,239/1,573 MB/s sequential read/write, and 10/25 GbE option
  • Back up multiple endpoints, manage 40 IP cameras, or safely sync and share files across sites

Fast, out-of-the-box performance with 25GbE support
The DS1825+/DS1825neo+ 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 as cache. Its support for expansion cards allows configuration flexibility, supporting faster networking of up to 25GbE.

Expand capacity for evolving needs
Consolidate your data with up to 192 TB of raw storage across 8 bays. Need more space? Add capacity with two DX525 for up to 432 TB of total raw storage.

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. Learn more
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. Learn more
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.
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. Learn more
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.Learn more
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. Learn more
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.Learn more
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.

Hard drives designed for Synology
See how Synology hard drives deliver reliability, consistent performance, and simplified system management through deep hardware-software integration.

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 No
Total installed storage capacity 0 TB
Number of storage drives supported 8
Installed storage drive type No
Supported storage drive types HDD & SSD
Storage drive capacity 0 GB
Supported storage drive interfaces Serial ATA
NVMe Yes
Storage drive sizes supported 2.5,3.5,M.2
Maximum supported storage capacity 192 TB
Number of M.2 (M & B) slots 2
RAID support Yes
RAID levels 0, 1, 5, 6, 10, JBOD
Online RAID migration Yes
Online RAID expansion Yes
Hot-swap drive bays Yes
Supported file systems BTRFS, FAT32, HFS+, NTFS, exFAT, ext3, ext4
Processor
Processor manufacturer AMD
Processor family AMD Ryzen
Processor generation AMD Ryzen Embedded V1000 Series
Processor model V1500B
Processor frequency 2.2 GHz
Processor cores 4
Processor threads 8
Memory
Internal memory 4 GB
Internal memory type DDR4
Maximum RAM supported 32 GB
ECC No
Memory form factor SO-DIMM
Memory slots 2
Network
Ethernet LAN Yes
Ethernet LAN data rates 2500 Mbit/s
iSCSI support Yes
Wake-on-WAN ready Yes
Wake-on-LAN ready Yes
Supported network protocols SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPs, FTP, SNMP, LDAP, CalDAV
Ports & interfaces
Ethernet LAN (RJ-45) ports 2
USB port Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 3
PCI Express x8 (Gen 3.x) slots 1
Design
Chassis type Desktop
Cooling type Active
Product colour Black
Number of fans 2 fan(s)
Fan diameter 2 12 cm
Fan diameter 12 cm
Drive bay locking Yes
LED indicators Yes
Cable lock slot Yes
Cable lock slot type Kensington
Performance
Type NAS
Device class Home & Home Office
Backup function Yes
Backup features Cloud, iSCSI LUN
Multilingual support Yes
Number of users 1024 user(s)
Noise level 23.8 dB
Third-party support Yes
Snapshot Yes
Web-based management Yes
Reset button Yes
Hot spare Yes
System log Yes
Access Control List (ACL) Yes
Browser supported Chrome, Firefox, Edge, Safari
Share folder 256
On/off switch Yes
Software
Operating system installed Synology DSM
Server operating systems supported Windows Server 2025
Other operating systems supported VMware, Citrix
Power
Power supply location Built-in
Power supply unit (PSU) capacity 250 W
Number of power supply units 1
Power consumption (typical) 60.1 W
Power consumption (HDD standby) 18.34 W
AC input voltage 100 - 240 V
AC input frequency 50/60 Hz
Number of phases 1
General
Product family DiskStation
Weight & dimensions
Width 343 mm
Depth 243 mm
Height 166 mm
Weight 6 kg
Packaging content
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%
Operating altitude 0 - 5000 m
Storage relative humidity (H-H) 5 - 95%
Storage temperature (T-T) -20 - 60 °C
Other features
Warranty period 3 year(s)
Compliance certificates Federal Communications Commission (FCC), CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, BIS, KC, RoHS
Digital Living Network Alliance (DLNA) certified Yes