Synology DiskStation DS925+ 4-Bay NAS

The Synology DiskStation DS925+ is a powerful 4-bay network attached storage solution designed for businesses, professional teams, advanced home users, and organizations requiring centralized file storage, backup, data management, and collaboration. Powered by an AMD Ryzen V1500B quad-core processor and equipped with 4GB DDR4 ECC memory, the DS925+ provides a capable hardware platform for demanding storage and business workloads.

The DS925+ combines four SATA drive bays with dual M.2 NVMe slots, dual 2.5GbE LAN ports, USB 3.2 Gen 1 connectivity, and support for compatible expansion hardware. Its flexible storage architecture supports 3.5-inch SATA HDDs, 2.5-inch SATA SSDs, and M.2 2280 NVMe SSDs, making it suitable for businesses that need scalable and high-performance network storage.

AMD Ryzen V1500B Quad-Core Processor

At the heart of the Synology DS925+ is an AMD Ryzen V1500B processor featuring four CPU cores operating at 2.2GHz. Its 64-bit architecture provides the processing capability required for modern NAS workloads, multi-user environments, file management, backup operations, and business applications.

The processor also includes a hardware encryption engine, supporting efficient handling of encrypted data workloads while helping organizations protect important business information.

4GB DDR4 ECC Memory

The DS925+ comes with 4GB DDR4 ECC SODIMM memory installed as a single 4GB module. ECC memory is particularly valuable in storage environments because it is designed to detect and correct certain memory errors that could otherwise affect system stability or data integrity.

The system provides two memory slots and supports a maximum memory capacity of 32GB using two compatible 16GB modules.

Four SATA Drive Bays

The Synology DiskStation DS925+ includes four internal drive bays for building a flexible centralized storage system.

Supported internal SATA drive formats include:

• 3.5-Inch SATA HDD
• 2.5-Inch SATA SSD

The SATA drive bays support hot-swappable drives, allowing compatible drives to be replaced without requiring a complete system shutdown when the storage configuration permits.

Expandable up to 9 Drive Bays

Organizations requiring additional storage capacity can expand the DS925+ from four internal bays to a maximum of nine drive bays using one compatible Synology DX525 expansion unit.

This provides a practical upgrade path for growing businesses that may need additional storage capacity in the future without immediately replacing their primary NAS system.

Dual M.2 NVMe SSD Slots

The DS925+ includes two M.2 2280 NVMe SSD slots, providing additional storage-performance flexibility.

Compatible M.2 NVMe SSDs can be used for:

• SSD Cache
• Supported M.2 Storage Pools

This gives businesses the flexibility to accelerate frequently accessed data or configure supported high-speed flash storage according to workload requirements.

Note: The hot-swappable drive feature does not apply to the M.2 SSD slots.

Dual 2.5GbE LAN Connectivity

The Synology DS925+ features two RJ-45 2.5GbE LAN ports, providing faster network connectivity than conventional Gigabit Ethernet NAS configurations.

The higher network bandwidth is particularly useful in environments where multiple users regularly access large files, perform backups, synchronize data, or work with shared network resources.

Dual network interfaces also provide greater flexibility when configuring the NAS within supported network environments.

Centralized Business Storage

The DS925+ can serve as a centralized storage platform where authorized users can store, organize, access, and manage business files over the network.

Typical applications include:

• Centralized Business File Storage
• Shared Departmental Data
• Document Management
• Computer Backup
• Business Data Backup
• Team File Sharing
• Data Archiving
• Multimedia Storage
• Professional Data Management

Designed for Small & Medium Businesses

The combination of a quad-core Ryzen processor, ECC memory, four SATA bays, NVMe support, and dual 2.5GbE networking makes the Synology DS925+ suitable for small and medium-sized businesses requiring a dedicated network storage platform.

It can provide centralized storage for departments such as:

• Administration
• Finance & Accounting
• Sales
• Marketing
• Human Resources
• IT Departments
• Creative Teams
• Professional Services

USB 3.2 Gen 1 Connectivity

The DS925+ includes two USB 3.2 Gen 1 ports for connecting supported external devices and storage hardware.

This provides additional flexibility for data transfer, external storage, backup workflows, and compatible peripheral connectivity.

USB Type-C Expansion Port

A dedicated USB Type-C expansion port is provided for connecting supported Synology expansion hardware, including the compatible DX525 expansion unit.

This allows businesses to increase available drive capacity as their storage requirements grow.

Dual 92mm Cooling Fans

The Synology DS925+ uses two 92mm system fans to maintain appropriate airflow across installed storage drives and internal components.

Users can select between multiple supported fan modes:

• Full-Speed Mode
• Cool Mode
• Quiet Mode

This allows cooling behavior to be adjusted according to operating requirements and environment.

Low-Noise Operation

Synology specifies a noise level of approximately 20.5 dB(A) under its defined testing conditions, helping make the DS925+ suitable for office environments where excessive equipment noise may be undesirable.

Power Management Features

The DS925+ includes several practical power-management capabilities for business and professional installations.

• Scheduled Power On / Off
• Power Recovery
• Wake on LAN / WAN
• HDD Hibernation Support
• Adjustable Front LED Brightness

Power Consumption

According to the provided specifications, the Synology DS925+ consumes approximately 37.91 watts during access and 12.33 watts during HDD hibernation under Synology’s specified testing conditions.

The unit supports an AC input voltage range of 100V to 240V AC at 50/60Hz.

Compact Desktop Design

Despite supporting four internal drives and expandable storage, the DS925+ maintains a compact desktop form factor suitable for offices, server rooms, IT workspaces, and professional environments.

The chassis measures approximately:

• Height: 166mm
• Width: 199mm
• Depth: 223mm
• Weight: 2.26kg

Operating Environment

The Synology DS925+ is designed to operate within the following environmental conditions:

• Operating Temperature: 0°C to 40°C
• Storage Temperature: -20°C to 60°C
• Operating Humidity: 8% to 80% RH
• Storage Humidity: 5% to 95% RH

Key Features

• 4-bay network attached storage system
• AMD Ryzen V1500B processor
• 4-core 64-bit CPU architecture
• 2.2GHz CPU frequency
• Hardware encryption engine
• 4GB DDR4 ECC SODIMM memory installed
• Two memory slots
• Expandable up to 32GB memory
• Four 3.5″/2.5″ SATA drive bays
• Supports SATA HDD and SATA SSD
• Two M.2 2280 NVMe SSD slots
• M.2 support for cache or supported storage pools
• Dual RJ-45 2.5GbE LAN ports
• Two USB 3.2 Gen 1 ports
• USB Type-C expansion port
• Expandable up to 9 total drive bays with compatible DX525
• Hot-swappable SATA drive support
• Dual 92mm system fans
• Multiple fan speed modes
• Wake on LAN / WAN
• Scheduled power on/off
• Compact business desktop design

Technical Specifications

Certifications

• FCC
• CE
• BSMI
• VCCI
• RCM
• UKCA
• EAC
• CCC
• KC
• BIS

Ideal For

• Small & Medium Businesses
• Professional Offices
• IT Departments
• Centralized File Storage
• Business Data Backup
• Team File Sharing
• Data Archiving
• Professional Workgroups
• Creative Teams
• Home Offices
• Advanced Home Users

Frequently Asked Questions

How many drive bays does the Synology DS925+ have?

The Synology DS925+ includes four internal SATA drive bays.

Which processor is used in the Synology DS925+?

It is powered by an AMD Ryzen V1500B quad-core processor operating at 2.2GHz.

How much RAM does the DS925+ include?

The DS925+ comes with 4GB DDR4 ECC SODIMM memory installed.

Can the memory be upgraded?

Yes. The DS925+ has two memory slots and supports up to 32GB of compatible memory using two 16GB modules.

Does the Synology DS925+ support 2.5GbE networking?

Yes. It features two RJ-45 2.5GbE LAN ports for high-speed network connectivity.

Does the DS925+ support NVMe SSDs?

Yes. It includes two M.2 2280 NVMe SSD slots that can be used for supported SSD cache or storage pool configurations.

Which SATA drives are supported?

The four internal bays support compatible 3.5-inch SATA HDDs and 2.5-inch SATA SSDs.

Can the Synology DS925+ be expanded?

Yes. It supports up to nine total drive bays when used with one compatible Synology DX525 expansion unit.

Does the DS925+ support hot-swappable drives?

Yes. The supported SATA drive bays provide hot-swappable drive functionality. The M.2 SSD slots do not support hot swapping.

Is the Synology DS925+ suitable for business use?

Yes. Its Ryzen processor, ECC memory, scalable storage, NVMe support, and dual 2.5GbE networking make it suitable for centralized storage, file sharing, backup, and professional business workloads.