Synology DS725+ DiskStation 2-Bay 2.5GbE Tower NAS
Next-Level Data Management, Built to Expand with You Empower your workflow and protect your digital assets—supercharged 2-bay NAS with 2.5GbE networking, scalable to 140TB, and...
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Next-Level Data Management, Built to Expand with You
Empower your workflow and protect your digital assets—supercharged 2-bay NAS with 2.5GbE networking, scalable to 140TB, and seamless hybrid cloud, backup, and surveillance features.
Highlights
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2-bay NAS, scalable to 7 bays (up to 140TB raw storage with DX525)
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Two built-in 2.5GbE ports for high-speed connectivity
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Over 276 MB/s read, 224 MB/s write sequential speeds
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Supports 2 x M.2 NVMe SSD slots for caching
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Flexible storage: SATA HDD/SSD in 2.5"/3.5" bays
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Up to 40 IP cameras supported for surveillance
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Hybrid cloud and NAS-to-NAS sync for multi-site workflows
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Centralised backup for PCs, servers, VMs, SaaS, and mobile devices
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Intuitive DSM apps for photos, files, and collaboration
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3-year warranty, extendable to 5 years
Key Features
Storage & Expansion
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Bays: 2 native, expandable to 7 with DX525 (up to 140 TB raw, 7 × 20 TB)
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Connectivity: 2 × 2.5GbE LAN ports for fast network transfers
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Sequential Speeds: 276 MB/s read, 224 MB/s write
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M.2 NVMe: 2 slots for SSD cache acceleration
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Drive Support: 2.5"/3.5" SATA HDDs and SSDs
Data Management & Collaboration
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File Server: Store, sync, access, and share from anywhere
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File Versioning: Instant recovery from mistakes, deletions, or malware
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Private Cloud: Access via mobile, desktop, or browser
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Photo Management: Automated backup, secure sharing, album creation
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Collaboration: Synology productivity suite, on-prem email, real-time editing
Backup & Data Protection
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Multi-Endpoint Backup: PCs, servers, VMs, SaaS (Microsoft 365, Google Workspace)
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Immutable Snapshots: Automated, tamper-proof restore points
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Cloud Sync: Connects to BackBlaze B2, Dropbox, Google Drive, OneDrive
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NAS-to-NAS Sync: Auto site-to-site, one-way or two-way
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Hybrid Cloud: Caches most-used files for rapid access, reduces on-site storage needs
Surveillance
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Surveillance Station: Manages up to 40 IP cameras, remote monitoring, dual cloud recording
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Compatibility: Over 8,700 validated IP camera models
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Cloud Backup: End-to-end encrypted cloud recording for maximum protection
Centralised Management
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Central Management System (CMS): Global fleet management, group policies, batch updates
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Active Insight: Cloud-based monitoring for health, backups, and security
Drives & Reliability
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Optimised for Synology HDD/SSD: Enterprise and Plus Series
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Deep hardware-software integration for stability and performance
Network Integration
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Compatible with Synology routers (RT6600ax, WRX560) for maximised 2.5GbE and network security features
Warranty & Support
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3-year hardware warranty, optional 2-year extension in selected regions
Summary
The Synology DS725+ brings high-speed 2-bay NAS flexibility that grows as your needs evolve. Expand to 140TB, accelerate with M.2 NVMe SSD caching, enjoy dual 2.5GbE networking, and benefit from seamless file sync, hybrid cloud, powerful backup, and up to 40-camera surveillance support—all in a compact, intuitive platform backed by Synology’s legendary reliability.
Synology DS725+ DiskStation 2-Bay 2.5GbE Tower NAS
The Synology DS725+ features high-speed AMD Ryzen processing, flexible 2-bay storage, and 2.5GbE connectivity for advanced business or home data management. Expansion-ready, reliable, and built for powerful multitasking.
Specifications
Specification | Details |
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Hardware Specifications | |
CPU Model | AMD Ryzen R1600 |
CPU Quantity | 1 |
CPU Core | 2 |
CPU Architecture | 64-bit |
CPU Frequency | 2.6 GHz (base), 3.1 GHz (turbo) |
Hardware Encryption Engine | Yes |
Memory | |
System Memory | 4 GB DDR4 ECC SODIMM |
Memory Module Pre-installed | 4 GB (4 GB × 1) |
Total Memory Slots | 2 |
Maximum Memory Capacity | 32 GB (16 GB × 2) |
Storage | |
Drive Bays | 2 |
Maximum Drive Bays with Expansion Unit | 7 (with DX525) |
M.2 Drive Slots | 2 (NVMe) |
Supported Drive Types | • 3.5" SATA HDD • 2.5" SATA SSD • M.2 2280 NVMe SSD |
Hot Swappable Drive | Yes (except M.2 SSD slots) |
External Ports | |
RJ-45 1GbE LAN Port | 1 |
RJ-45 2.5GbE LAN Port | 1 |
USB 3.2 Gen 1 Port | 1 |
Expansion Port | 1 × USB Type-C |
Appearance | |
Size (H × W × D) | 166 × 106 × 223 mm (6.5 × 4.2 × 8.8 in) |
Weight | 1.51 kg (3.3 lb) |
Others | |
System Fan | 1 × 92 mm |
Fan Speed Modes | • Full-Speed Mode • Cool Mode • Quiet Mode |
Brightness Adjustable LED | Yes |
Power Recovery | Yes |
Noise Level | 17.9 dB(A) |
Scheduled Power On / Off | Yes |
Wake on LAN / WAN | Yes |
Power Supply Unit / Adapter | 65 W |
AC Input Power Voltage | 100 V to 240 V AC |
Power Frequency | 50/60 Hz, Single Phase |
Power Consumption | • 20.41 W (Access) • 7.87 W (HDD Hibernation) |
British Thermal Unit | • 69.61 BTU/hr (Access) • 26.84 BTU/hr (HDD Hibernation) |
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 | FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS |
Warranty | 3-year hardware warranty, extendable to 5 years with EW201 or Extended Warranty Plus |
Environment | RoHS Compliant |
Packaging Content | • Main Unit × 1 • Accessory Pack × 1 • AC Power Adapter × 1 • AC Power Cord × 1 • RJ-45 LAN Cable × 2 |
Optional Accessories | • 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 |
DSM Specifications | |
Maximum Single Volume Size | • 200 TB (32 GB memory required) • 108 TB |
Maximum Internal Volume Number | 32 |
M.2 SSD Storage Pool Support | Yes |
SSD Read/Write Cache | Yes |
SSD TRIM | Yes |
Supported RAID Types | • Synology Hybrid RAID • Basic • JBOD • RAID 0 • RAID 1 • RAID 5 (with Expansion Unit) • RAID 6 (with Expansion Unit) • RAID 10 (with Expansion Unit) |
RAID Migration | • Basic to RAID 1 • Basic to RAID 5 (with Expansion Unit) • RAID 1 to RAID 5 (with Expansion Unit) • RAID 5 to RAID 6 (with Expansion Unit) |
Volume Expansion with Larger HDDs | • Synology Hybrid RAID • RAID 1 • RAID 5 (with Expansion Unit) • RAID 6 (with Expansion Unit) • RAID 10 (with Expansion Unit) |
Volume Expansion by Adding a HDD | • Synology Hybrid RAID (with Expansion Unit) • JBOD (with Expansion Unit) • RAID 5 (with Expansion Unit) • RAID 6 (with Expansion Unit) |
Global Hot Spare Supported RAID Types | • Synology Hybrid RAID (with Expansion Unit) • RAID 1 (with Expansion Unit) • RAID 5 (with Expansion Unit) • RAID 6 (with Expansion Unit) • RAID 10 (with Expansion Unit) |
Surveillance Station | |
Default Licenses | 2 |
Suggested Max IP Cameras (H.264) | • 1080p: 40 channels, 800 FPS • 3M: 35 channels, 350 FPS • 5M: 28 channels, 280 FPS • 4K: 17 channels, 170 FPS |
Suggested Max IP Cameras (H.265) | • 1080p: 40 channels, 1200 FPS • 3M: 40 channels, 600 FPS • 5M: 40 channels, 480 FPS • 4K: 20 channels, 200 FPS |
