DiskStation DS1525+

DiskStation DS1525+

Versatile all-purpose data hub

See why Synology drives are ideal
Product Image DS1525plus
Product Image DS1525plus
Trusted by professionals across all industries.
Synology is a solid storage with great capabilities out of the box. The licensing model of all-inclusive software adds great value to the product.
Information Technology Manager - Government
Synology provides a single-platform solution for all of our backup needs in a cost effective manner.
Director of Enterprise Infrastructure - Education
Synology's DSM is a masterpiece, designed to be user-friendly even for non-IT professionals, helping us become less reliant on out IT teams.
Director Media Services - Media
Working with Synology Products has just been the best. Its an all in one product that can cater for all aspects of Storage.
Senior Systems Engineer - Media
The Synology brand is very feature-rich and unbeatable in terms of price/performance in the NAS segment. Our current testing was primarily focused on backup, which delivered reliability alongside adequate performance.
CEO - IT Services
Smooth storage server setup with intuitive OS and reliable automation features
Server Administrator - Retail
A storage solution that can adapt with your evolving needsDownload Datasheet 5-bay with expansionUp to 300 TB of raw storage with expansion unitHigh-speed storageTwo built-in 2.5GbE ports, over 1,181/1,180 MB/s sequential read/write, and 10GbE optionVersatile applicationsBack up multiple endpoints, manage 40 IP cameras, or safely sync and share files across sites
Fast, out-of-the-box performance with customization optionsThe DS1525+ features built-in 2.5GbE networking with 10GbE option 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.
The DS1525+ achieves up to 696 MB/s read and 862 MB/s write speeds
It supports 10GbE networking
It features two built-in 2.5GbE ports
And supports two M.2 NVMe slots for caching
Expand capacity for evolving needsConsolidate 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.The DS1525+ supports up to 300 TB of raw capacity after expansion when using 20 TB drives
Store, share, and protectManage 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 accessStreamlined file management and collaborationStore, 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. Learn moreA private photo storage and management solutionEffortlessly 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 moreBoost team productivity with collaborative toolsEnhance 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
Multi-site synchronization to empower global workflowsNAS-to-NAS synchronizationImprove 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. Learn moreCloud-powered multi-site syncingEmpower 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 providersAutomatically 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
Comprehensive data backup, protection, and recovery solutionsBack up PCs, smartphones, cloud apps, and moreConsolidate 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 backupsProtect 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 moreTamper-proof protection with immutable snapshotsSafeguard 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
Smart surveillanceSynology Surveillance StationProtecting 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.Learn moreDual recording to the cloudSecure 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
Versatile testing platformCreate 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.
Learn more Centralized monitoring and managementMonitor and manage your Synology fleet from a central interface, on-prem or in the cloud.Central Management SystemManage Synology servers from a central console using group policies, task delegation, batch updates, and more.Learn moreActive InsightMonitor your global Synology fleet's performance, backup status, login activity, and more with the power of the cloud.Learn more

Performance backed by Synology drives

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

HDD
Enterprise Series 3.5" SATA Plus Series 3.5" SATA
SSD
Enterprise Series 2.5" SATA Enterprise Series M.2 NVMe
Hard drives designed for SynologySee how Synology hard drives deliver reliability, consistent performance, and simplified system management through deep hardware-software integration.Watch video 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. Learn more
Extended protection with Extended WarrantyThe DS1525+ is backed by Synology’s 3-year hardware warranty. An optional 2-year extended warranty is available in select regions to extend coverage to 5 years. Learn more
More than half of Fortune 500 companies rely on Synology solutionsCarousel showcasing logos of partner companies
Find out why Hardware Overview
  • 1Status indicator
  • 2Drive status indicators
  • 3Drive tray lock
  • 4USB 3.2 Gen 1 port
  • 5Power button and indicator
  • 6Drive trays
  • 7Fans
  • 82.5GbE RJ-45 ports
  • 9Reset button
  • 10USB 3.2 Gen 1 port
  • 11Power port
  • 12Network upgrade slot
  • 13Expansion ports
  • 14Kensington security slot
  • 15M.2 NVMe SSD slots
  • First Product Image
  • Second Product Image
  • Third Product Image
  • Fourth Product Image
  • Fifth Product Image
  • Sixth Product Image
Get in touchWhere to buyLearn moreAsk SynologyLearn moreNotes: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.Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.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.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.One 10GbE RJ-45 port can be added to the DS1525+ with Synology E10G22-T1-Mini Network Upgrade Module (sold separately).This figure represents the recommended number of IP cameras operating at 1080p.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.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 moreSurveillance Station includes two free licenses. Connecting more cameras and devices requires additional licenses. Learn more.C2 Backup for Surveillance requires purchase of an eligible annual subscription. Each additional channel requires a separate subscription. A free trial is available.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.Synology Active Insight includes three free licenses. Additional licenses can be added with the purchase of an annual subscription.The warranty period starts from the date of purchase as stated on your purchase receipt. Visit https://www.synology.com/company/legal/warranty for more information.
Hardware Specifications
CPU
CPU
 CPU Model AMD Ryzen V1500B
CPU Quantity 1
CPU Core 4
CPU Architecture 64-bit
CPU Frequency 2.2 GHz
Hardware Encryption Engine
Memory
Memory
 System Memory 8 GB DDR4 ECC SODIMM
Memory Module Pre-installed 8 GB (8 GB x 1)
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
Storage
 Drive Bays 5
Maximum Drive Bays with Expansion Unit 15 (DX525 x 2)
M.2 Drive Slots 2 (NVMe)
Drive Type (See all supported drives)
  • 3.5" SATA HDD
  • 2.5" SATA SSD
  • M.2 2280 NVMe SSD
Hot Swappable Drive*
Notes
  • The hot swappable drive feature is not supported by M.2 SSD slots.
  • Synology only guarantees full functionality, reliability, and performance for compatible drives. Please consult our compatibility list before purchasing hard drives. For more details, please refer to this article.
External Ports
External Ports
 RJ-45 2.5GbE LAN Port 2
USB 3.2 Gen 1 Port 2
Expansion Port 2
Expansion Port Type USB Type-C
PCIe
PCIe
 PCIe Expansion 1 x Gen3 x2 network upgrade slot
Appearance
Appearance
 Size (Height x Width x Depth) 166 mm x 230 mm x 223 mm
Weight 2.67 kg
Others
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* 22.60 dB(A)
Scheduled Power On / Off
Wake on LAN / WAN
Power Supply Unit / Adapter 120 watts
AC Input Power Voltage 100V to 240V AC
Power Frequency 50/60 Hz, Single Phase
Power Consumption 44.56 watts (Access)
13.63 watts (HDD Hibernation)
British Thermal Unit 151.95 BTU/hr (Access)
46.48 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 G.R.A.S. Type 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
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
Storage Humidity 5% to 95% RH
Certification
Certification
  • FCC
  • CE
  • BSMI
  • VCCI
  • RCM
  • UKCA
  • EAC
  • CCC
  • KC
  • BIS
Warranty
Warranty
 3-year hardware warranty, extendable to 5 years with EW201
Notes
  • The warranty period starts from the purchase date as stated on your purchase receipt. (Learn more)
  • EW201/EW202 is only available in Asia, Africa, and Oceania. Refer to the Extended Warranty website for details on supported countries/regions. (Learn more)
Environment
Environment
 RoHS Compliant
Packaging Content
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
Optional Accessories
Notes 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.
Notes: Model specifications are subject to change without prior notice. The figures are based on Synology internal testing. Each performance test is done individually. No other services or applications are processed at the same time. The actual performance may be lower than lab testing figure due to differences in server configuration, deployment, and the number of active operations. If usage requirements exceed the specifications above, please contact our regional partners for professional advice.
Compatible Synology Accessories
DX525
3.5" SATA HDD
Plus Series
  • HAT3300-2T
  • HAT3300-4T
  • HAT3300-6T
  • HAT3320-8T
  • HAT3310-12T
  • HAT3310-16T
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5300-16T
  • HAT5310-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV3410-400G
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
E10G22-T1-Mini
  • D4ES03-8G
  • D4ES03-16G
DX525
3.5" SATA HDD
Plus Series
  • HAT3300-2T
  • HAT3300-4T
  • HAT3300-6T
  • HAT3320-8T
  • HAT3310-12T
  • HAT3310-16T
Enterprise Series
  • HAT5320-4T
  • HAT5320-8T
  • HAT5300-12T
  • HAT5300-16T
  • HAT5310-20T
  • HAT5320-24T
2.5" SATA SSD
Enterprise Series
  • SAT5221-480G
  • SAT5221-960G
  • SAT5221-1920G
  • SAT5221-3840G
  • SAT5210-7000G
M.2 NVMe SSD
Enterprise Series
  • SNV3410-400G
  • SNV5420-400G
  • SNV5420-800G
  • SNV5420-1600G
E10G22-T1-Mini
  • D4ES03-8G
  • D4ES03-16G
Notes: For more information about drive firmware, EOL accessories, etc, see Synology Product Compatibility list.