Overview

Synology DS1525neo+ 5-Bay NAS for Business and Private Cloud Storage
The Synology DS1525neo+ is a versatile 5-bay NAS designed to provide fast, flexible and secure centralized storage for homes, businesses and growing teams. With dual 2.5GbE networking, M.2 NVMe cache support, SATA HDD and SSD compatibility, and expansion support for up to 15 drive bays, it provides a practical platform that can grow as storage requirements increase.

Description

The Synology DS1525neo+ combines high-speed networking, flexible storage options and a broad range of data management applications in one compact NAS system. Its five hot-swappable drive bays support 3.5-inch SATA hard drives or 2.5-inch SATA SSDs, while two M.2 2280 NVMe slots can be used for caching to improve storage performance.

With two built-in 2.5GbE RJ-45 ports and an available PCIe Gen3 x2 network upgrade slot, the DS1525neo+ can be configured for faster network connectivity, including 10GbE. Sequential performance can reach up to 1,181 MB/s read and 1,180 MB/s write when suitably configured.

The system can also be expanded using compatible expansion units, allowing the total raw storage capacity to reach up to 360 TB with 15 drive bays and 24 TB drives. This makes the DS1525neo+ suitable for users who want to start with a manageable amount of storage and add capacity later.

Features

Flexible 5-Bay NAS Storage
The DS1525neo+ provides five internal drive bays with hot-swappable support, giving businesses and advanced home users an easy way to install, replace or expand storage without unnecessarily interrupting operation.

Storage options include:

• 5 x 3.5-inch SATA HDD or 2.5-inch SATA SSD bays
• 2 x M.2 2280 NVMe SSD slots for cache
• Up to 120 TB of raw storage across the five internal bays
• Up to 360 TB of raw storage when expanded to 15 bays
• Hot-swappable drive design
• Support for Synology-compatible HDDs and SSDs

For larger deployments, two compatible DX525 expansion units can be added, providing additional drive bays as storage requirements grow.

High-Speed 2.5GbE Networking
Two built-in 2.5GbE RJ-45 ports provide faster network transfers than conventional Gigabit Ethernet. The DS1525neo+ can deliver sequential read and write performance of up to 1,181 MB/s and 1,180 MB/s respectively under suitable configurations.

For users who need even more network bandwidth, the PCIe Gen3 x2 network upgrade slot provides an option for upgrading network connectivity to 10GbE.

Key connectivity includes:

• 2 x RJ-45 2.5GbE LAN ports
• 1 x PCIe Gen3 x2 network upgrade slot
• 2 x USB 3.2 Gen 1 ports
• 2 x USB Type-C expansion ports
• 2 x M.2 2280 NVMe slots

Powerful Storage and Caching
The DS1525neo+ supports a combination of SATA hard drives, SATA SSDs and M.2 NVMe SSDs. NVMe drives can be used as cache to help improve responsiveness for frequently accessed data and demanding workloads.

The system is powered by an AMD Ryzen V1500B quad-core processor with 4GB of DDR4 non-ECC SO-DIMM memory. Two memory slots provide additional flexibility for supported memory configurations.

Private Cloud File Management
Synology DiskStation Manager provides a centralized environment for storing, accessing and sharing documents, photos and other files. Users can access data from computers, mobile devices and web browsers while maintaining control over their own storage infrastructure.

File versioning also helps recover previous versions of files following accidental deletion, mistakes or malware incidents. This makes the DS1525neo+ useful as a private cloud alternative for businesses that want centralized access without relying entirely on third-party cloud storage.

Photo Storage and Digital Asset Management
The NAS can be used to back up and organize photos, videos and other visual content. Albums, sharing tools and centralized management make it easier to manage large collections while providing controlled access for colleagues, clients or other users.

Business Collaboration Tools
The DS1525neo+ can support a range of Synology productivity applications designed for teams. Documents can be created, edited and shared collaboratively, while communication tools can provide chat channels and private conversations.

It can also be used to host an on-premises mail server, helping organizations maintain greater control over business data and communications.

Multi-Site File Synchronization
For businesses operating from multiple locations, Synology synchronization tools can keep files and folders aligned between NAS systems. One-way or two-way synchronization can be configured depending on the workflow.

A hybrid cloud approach can also provide local access to frequently used files while moving less frequently accessed data to cloud storage. This can help reduce local storage requirements while maintaining convenient access to business data.

The DS1525neo+ can synchronize data with cloud services including:

• Backblaze B2
• Dropbox
• Google Drive
• Microsoft OneDrive

Encryption, synchronization controls and bandwidth management options provide additional control over how data moves between systems.

Centralized Backup and Data Protection
The DS1525neo+ can consolidate backup tasks for PCs, servers, virtual machines, SaaS applications and other endpoints. Centralized management makes it easier to monitor backups and restore individual files or entire systems when required.

Synology backup applications can also protect NAS data, applications and configurations by creating scheduled backups to local servers, remote servers, external drives or cloud destinations such as Synology C2 Storage.

Immutable snapshots provide another layer of protection for critical shared folders and LUNs. Retention policies and offsite replication can help improve resilience against accidental changes, system failures and security incidents.

Smart Video Surveillance
Synology Surveillance Station turns the NAS into a centralized video management platform for compatible IP cameras. The system supports a large range of IP camera models and provides tools for live monitoring, recording, investigation and remote playback.

The DS1525neo+ can support management of up to 40 IP cameras, making it suitable for small and medium-sized surveillance deployments where centralized video storage and management are required.

Cloud-based surveillance backup can provide an additional copy of recordings, helping keep important footage accessible if the local NAS is compromised or unavailable.

Virtual Machines and Container Workloads
The DS1525neo+ can also be used as a platform for application testing and evaluation. Docker containers and virtual machines provide options for running applications in isolated environments.

Virtual DSM can be used to create a separate test environment, helping administrators evaluate packages, applications and configurations without directly affecting production systems.

Centralized NAS Management
Businesses managing multiple Synology systems can use centralized management tools to monitor and administer their NAS fleet. Group policies, task delegation and batch updates can simplify administration across multiple devices.

Active Insight provides cloud-based monitoring of Synology systems, including performance, backup status and login activity, helping administrators keep track of deployments from a central location.

Synology Drive Compatibility
The DS1525neo+ is designed to work with Synology storage solutions, including compatible 3.5-inch SATA hard drives, 2.5-inch SATA SSDs and M.2 NVMe SSDs. Using supported drives can provide consistent performance and simplify storage management through integration between the NAS hardware and software.

For high-speed network environments, pairing the NAS with suitable networking equipment can help users take better advantage of its 2.5GbE connectivity.

Technical Details

• Model: Synology DS1525neo+
• Form factor: 5-bay desktop NAS
• Processor: AMD Ryzen V1500B quad-core
• Memory: 4GB DDR4 non-ECC SO-DIMM
• Memory slots: 2
• Drive bays: 5
• Drive compatibility: 3.5-inch SATA HDD and 2.5-inch SATA SSD
• NVMe support: 2 x M.2 2280 NVMe SSD slots
• Maximum expansion: Up to 15 drive bays
• Maximum raw capacity: Up to 360 TB with expansion and 24 TB drives
• Network: 2 x 2.5GbE RJ-45
• Network expansion: 1 x PCIe Gen3 x2 slot
• USB: 2 x USB 3.2 Gen 1
• USB Type-C: 2 x expansion ports
• Drive installation: Hot-swappable
• Surveillance support: Up to 40 IP cameras

Part Number and SKU
The product part number / SKU is DS1525neo+. This identifier can be used when checking compatibility, availability or ordering the correct Synology NAS model.

A Scalable NAS for Growing Storage Requirements
Whether used for centralized business files, private cloud storage, automated backups, photo management or IP video surveillance, the Synology DS1525neo+ provides a flexible foundation that can expand with changing requirements. Its combination of five hot-swappable bays, dual 2.5GbE networking, NVMe cache support and expansion to 15 drive bays makes it suitable for users who need more than basic network storage.

Specifications

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Specifications
Product Code	DS1525neo+
Item	DS1525neo+
CPU
CPU Model	AMD Ryzen V1500B
CPU Quantity	1
CPU Cores	4
CPU Threads	8
CPU Architecture	64-bit
CPU Frequency	2.2 GHz
Hardware Encryption Engine	Yes
Memory
System Memory	4 GB DDR4 non-ECC SODIMM
Memory Module Pre-installed	4 GB (4 GB x 1)
Total Memory Slots	2
Maximum Memory Capacity	32 GB (16 GB x 2)
Notes	Synology may revise pre-installed memory module specifications in response to component lifecycle and supply conditions. All revised components undergo the same rigorous validation to ensure equivalent compatibility, stability, and performance.
Storage
Drive Bays (See all supported drives)	5 x 3.5" SATA HDD or 2.5" SATA SSD
	2 x M.2 2280 NVMe SSD
Maximum Drive Bays with Expansion Unit	15 (DX525 x 2)
Hot Swappable Drive	Yes
Notes	The hot swappable drive feature is not supported by M.2 SSD slots.
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 Expansion	1 x Gen3 x2 network upgrade slot
Appearance
Size (Height x Width x Depth)	166 mm x 230 mm x 223 mm
Weight	2.67 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	Yes
Power Recovery	Yes
Noise Level	22.60 dB(A)
Scheduled Power On / Off	Yes
Wake on LAN / WAN	Yes
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)
	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: 24.25-25.75degreesC , Humidity: 58.2-61.8%
Temperature
Operating Temperature	0degreesC to 40degreesC (32degreesF to 104degreesF)
Storage Temperature	-20degreesC to 60degreesC (-5degreesF to 140degreesF)
Operating Humidity	8% to 80% RH
Storage Humidity	5% to 95% RH
Certification
Certification	FCC
	CE
	BSMI
	VCCI
	RCM
	UKCA
	EAC
	CCC
	KC
	BIS
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	DDR4 non-ECC SODIMM: D4NS01-4G
	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
	10GbE Network Upgrade Module: E10G22-T1-Mini
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.