Synology DS1525+ 5 Bay NAS

DiskStation DS1525+

Versatile all-purpose data hub

A storage solution that can adapt with your evolving needs

5-bay with expansion
Up to 300 TB of raw storage with expansion unit[1],[2]

High-speed storage
Two built-in 2.5GbE ports, over 1,181/1,180 MB/s sequential read/write[3], and 10GbE option[4]

Versatile applications
Back up multiple endpoints, manage 40 IP cameras[5], or safely sync and share files across sites

Fast, out-of-the-box performance with customization options

The DS1525+ features built-in 2.5GbE networking with 10GbE option[4] 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.[1],[6]

- Up to 1,181/1,180 MB/s read/write[3]
- Up to 10GbE networking[4]
- Built-in dual 2.5GbE ports
- 2 x M.2 NVMe cache[6]

Expand capacity for evolving needs

Consolidate your data with up to 100 TB of raw storage across 5 bays. Need more space? Add capacity with two DX525 for up to 300 TB of total raw storage.[2]

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

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.[7]

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.[7]

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.[8]

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.[9]

Versatile testing platform

Create a versatile environment for application testing and evaluation, supporting Docker containers and virtual machines. For package and security testing, Virtual DSM acts as a dedicated test environment, ensuring isolation between applications, systems, and data.[10]

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.[11]

Performance backed by Synology drives

Designed for Synology systems, Synology drives deliver consistent performance and unmatched reliability for your deployments.[1]

Hardware Overview

1 - Status indicator
2 - Drive status indicators
3 - Drive tray lock
4 - USB 3.2 Gen 1 port
5 - Power button and indicator
6 - Drive trays
7 - Fans
8 - 2.5GbE RJ-45 ports
9 - Reset button
10 - USB 3.2 Gen 1 port
11 - Power port
12 - Network upgrade slot
13 - Expansion ports
14 - Kensington security slot

Notes:

1. Compatible drives are mandatory. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.
2. Raw capacity calculated using 20 TB drives. Usable storage capacity may vary depending on drives used and RAID configuration. DS1525+ supports up to 15 drives with two Synology DX525, sold separately.
3. Performance figures are obtained through internal testing by Synology. Actual performance may vary depending on the testing environment, usage, and configuration. See performance charts for more information.
4. One 10GbE RJ-45 port can be added to the DS1525+ with Synology E10G22-T1-Mini Network Upgrade Module (sold separately).
5. This figure represents the recommended number of IP cameras operating at 1080p.
6. Synology Enterprise Series M.2 NVMe SSD drives can be installed through the built-in M.2 slots to enable SSD caching or create SSD storage pools. Drives are sold separately.
7. C2 Storage for Hyper Backup and Hybrid Share requires purchase of an eligible annual or monthly subscription. A free trial is available for each newly registered account. Learn more
8. Surveillance Station includes two free licenses. Connecting more cameras and devices requires additional licenses. Learn more.
9. C2 Backup for Surveillance requires purchase of an eligible annual subscription. Each additional channel requires a separate subscription. A free trial is available.
10. Certain advanced features require Virtual Machine Manager Pro. One Virtual DSM License is included. Additional Virtual DSM instances require the purchase of Virtual DSM Licenses.
11. Synology Active Insight includes three free licenses. Additional licenses can be added with the purchase of an annual subscription.
12. The warranty period starts from the date of purchase as stated on your purchase receipt.
13. As of 8 January 2025, Synology Inc. has an overall rating of 4.7 out of 5 in the Primary Storage Platforms category, based on 232 reviews on Gartner Peer Insights™. Click here to learn more.
14. Gartner® and Peer Insights™ are trademarks of Gartner, Inc. and/or its affiliates. All rights reserved. Gartner Peer Insights content consists of the opinions of individual end users based on their own experiences, and should not be construed as statements of fact, nor do they represent the views of Gartner or its affiliates. Gartner does not endorse any vendor, product or service depicted in this content nor makes any warranties, expressed or implied, with respect to this content, about its accuracy or completeness, including any warranties of merchantability or fitness for a particular purpose.