Synology DS725neo+ DiskStation 2-Bay 2.5GbE Tower NAS
Expandable Two-Bay Storage for Business and Edge Workloads The Synology DS725neo+ is a compact two-bay network attached storage system for private cloud storage, backup, file...
Expandable Two-Bay Storage for Business and Edge Workloads
The Synology DS725neo+ is a compact two-bay network attached storage system for private cloud storage, backup, file sharing and surveillance, distinguished by 4 GB DDR4 non-ECC memory, built-in 2.5GbE connectivity and dual M.2 NVMe slots. It is designed for home offices, small organisations, branch sites and edge deployments that need reliable data services with a clear expansion path.
Two internal SATA bays provide up to 48 TB of raw capacity using 24 TB drives, while one optional Synology DX525 expands the platform to seven bays and up to 168 TB of raw capacity. The system is supplied diskless, allowing buyers to select compatible drives and RAID protection for their workload.
Highlights
Compact Storage with Room to Expand
- Two hot-swappable SATA drive bays
- Supports compatible 3.5-inch HDDs and 2.5-inch SATA SSDs
- Up to 48 TB raw internal capacity using two 24 TB drives
- Expandable to seven bays and 168 TB raw capacity with one optional DX525
Faster Network and NVMe Performance
- One built-in 2.5GbE port for higher-throughput file access
- One additional 1GbE port for flexible network deployment
- Up to 276 MB/s sequential read and 224 MB/s sequential write
- Two M.2 2280 NVMe slots for compatible SSD cache or supported storage pools
Integrated Data Protection and Collaboration
- Private cloud file access, sharing, synchronisation and versioning
- Backup support for computers, servers, virtual machines and cloud applications
- Btrfs snapshots, replication and multi-site synchronisation
- Synology Drive, Office, Photos and Chat applications
Surveillance and Business Services
- Synology Surveillance Station with two included camera licences
- Suggested support for up to 40 IP cameras
- Centralised management, monitoring and high-availability support
- iSCSI, virtualisation, VPN and mail-service capabilities
Key Features
AMD Ryzen R1600 Processing
The AMD Ryzen R1600 processor provides two cores, four threads and a frequency of 2.6 GHz with up to 3.1 GHz turbo. Its 64-bit architecture and hardware encryption engine support responsive encrypted file services, backup tasks, synchronisation and everyday business applications.
4 GB Non-ECC Memory Configuration
The DS725neo+ includes one 4 GB DDR4 non-ECC SODIMM and supports up to 32 GB across two memory slots. The standard DS725+ instead ships with ECC memory. Buyers who specifically require ECC memory pre-installed should select the DS725+. Multi-module configurations must use identical supported modules with the same model number.
2.5GbE and 1GbE Connectivity
A built-in 2.5GbE port helps reduce transfer bottlenecks when connected to compatible network equipment and clients. The separate 1GbE port adds connection flexibility for branch, office and edge deployments. Actual throughput depends on the installed drives, RAID configuration, network hardware and workload.
Dual M.2 NVMe Slots
Two M.2 2280 NVMe slots support compatible SSD cache to improve access to frequently used data. Selected Synology-verified NVMe SSDs can also create M.2 storage pools. M.2 drives are sold separately and are not hot-swappable.
Seven-Bay Expansion with DX525
One optional Synology DX525 adds five SATA drive bays through the dedicated USB Type-C expansion port. This enables the system to grow from two to seven bays as capacity requirements increase without replacing the main NAS.
Synology DSM Private Cloud
Synology DiskStation Manager provides controlled browser, desktop and mobile access to centrally stored data. Synology Drive supports file synchronisation, sharing and version recovery, while Synology Photos, Office and Chat support privately managed media and team collaboration workflows.
Backup, Snapshots and Multi-Site Protection
DSM applications can protect supported computers, servers, virtual machines, SaaS data and other Synology systems. Hyper Backup, Snapshot Replication and site-to-site synchronisation provide scheduled backup, point-in-time recovery and off-site protection options for business continuity.
Synology Surveillance Station
Surveillance Station centralises live monitoring, recording, playback, alerts and investigation. Two camera licences are included, with additional licences required for more cameras. Synology suggests support for up to 40 IP cameras, subject to codec, resolution, frame rate, drive performance and other active workloads.
Compatibility and Configuration
The DS725neo+ is supplied without storage drives, NVMe SSDs or an expansion unit. Buyers should consult Synology's current compatibility list before selecting drives, SSDs or memory. Some Synology C2, Active Insight and other cloud services require separate subscriptions.
Summary
The Synology DS725neo+ is a compact, expandable two-bay NAS for private cloud storage, backup, collaboration, surveillance and edge services. Its Ryzen processor, 2.5GbE networking, dual NVMe slots, DSM software platform and expansion to seven bays provide a flexible foundation for growing data requirements, while the included non-ECC memory distinguishes it from the standard DS725+.
Synology DS725neo+ DiskStation 2-Bay 2.5GbE Tower NAS
The Synology DS725neo+ is a compact two-bay NAS with an AMD Ryzen R1600 processor, 4 GB DDR4 non-ECC memory, one 2.5GbE port, one 1GbE port and two M.2 NVMe slots. It supports compatible SATA HDDs and SSDs, provides up to 48 TB of raw internal capacity and expands to seven bays with an optional DX525. Synology DiskStation Manager supports private cloud storage, backup, file services, virtualisation and surveillance workloads.
| Specification | Details |
|---|---|
| Hardware | |
| CPU Model | AMD Ryzen R1600 |
| CPU Quantity | 1 |
| CPU Cores and Threads | 2 cores, 4 threads |
| CPU Architecture | 64-bit |
| CPU Frequency | 2.6 GHz base, 3.1 GHz turbo |
| Hardware Encryption Engine | Yes |
| Memory | |
| Installed Memory | 4 GB DDR4 non-ECC SODIMM |
| Pre-installed Memory Module | 4 GB (1 × 4 GB) |
| Memory Slots | 2 |
| Maximum Memory Capacity | 32 GB (2 × 16 GB) |
| Memory Configuration | All modules in a multi-module configuration must be identical and share the same model number |
| Compatible Synology Memory | D4NS01-4G non-ECC • D4ES04-4G, D4ES03-8G and D4ES03-16G ECC modules, subject to the current compatibility list |
| Storage and Expansion | |
| SATA Drive Bays | 2 × 3.5-inch SATA HDD or 2.5-inch SATA SSD |
| M.2 Drive Slots | 2 × M.2 2280 NVMe SSD |
| Maximum Drive Bays | 7 with 1 × Synology DX525 expansion unit |
| Hot-Swappable Drives | SATA drive bays: Yes • M.2 SSD slots: Not supported |
| Maximum Raw Internal Capacity | Up to 48 TB using 2 × 24 TB drives |
| Maximum Raw Capacity with Expansion | Up to 168 TB using 7 × 24 TB drives |
| M.2 SSD Storage Pools | Supported with selected Synology-verified SSDs |
| SSD Read and Write Cache | Supported |
| SSD TRIM | Supported |
| Compatible Storage Families | HAT5300 and HAT3300 Series SATA HDDs • SAT5200 Series SATA SSDs • SNV3400 and SNV5400 Series M.2 NVMe SSDs • Check the current compatibility list |
| Performance | |
| Maximum Sequential Read | Up to 276 MB/s |
| Maximum Sequential Write | Up to 224 MB/s |
| Performance Conditions | Synology laboratory results; actual performance varies with drives, RAID configuration, network equipment, client hardware and active workloads |
| Networking and Ports | |
| 2.5GbE LAN Port | 1 × RJ-45 |
| 1GbE LAN Port | 1 × RJ-45 |
| 1GbE MTU Limit | 1500 |
| USB Port | 1 × USB 3.2 Gen 1 |
| Expansion Port | 1 × USB Type-C for Synology DX525 |
| Wake on LAN and WAN | Supported |
| Kensington Security Slot | Yes |
| Physical Specifications | |
| Dimensions (H × W × D) | 166 × 106 × 223 mm |
| Weight | 1.51 kg without drives |
| System Fan | 1 × 92 mm |
| Fan Speed Modes | Full-Speed Mode • Cool Mode • Quiet Mode |
| Noise Level | 17.9 dB(A) |
| Adjustable Front LED Brightness | Supported |
| Scheduled Power On and Off | Supported |
| Power Recovery | Supported |
| Power | |
| Power Adapter | 65 W |
| AC Input Voltage | 100 V to 240 V AC |
| Power Frequency | 50/60 Hz, single phase |
| Power Consumption | 20.41 W during access • 7.87 W during HDD hibernation |
| Thermal Output | 69.61 BTU/hr during access • 26.84 BTU/hr during HDD hibernation |
| 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 |
| DSM Storage Management | |
| Maximum Single Volume Size | 108 TB • Up to 200 TB with 32 GB memory and a supported configuration |
| Maximum Internal Volumes | 32 |
| Supported RAID Types | Synology Hybrid RAID • Basic • JBOD • RAID 0 • RAID 1 • RAID 5, RAID 6 and RAID 10 with an expansion unit |
| RAID Migration | Basic to RAID 1 • Basic to RAID 5 with expansion • RAID 1 to RAID 5 with expansion • RAID 5 to RAID 6 with expansion |
| Volume Expansion with Larger Drives | Synology Hybrid RAID • RAID 1 • RAID 5, RAID 6 and RAID 10 with expansion |
| Volume Expansion by Adding Drives | Synology Hybrid RAID, JBOD, RAID 5 and RAID 6 with an expansion unit |
| Global Hot Spare Support | Synology Hybrid RAID, RAID 1, RAID 5, RAID 6 and RAID 10 with an expansion unit |
| Volume Capacity Note | Volumes above 108 TB require at least 32 GB memory; usable capacity depends on RAID, filesystem and system metadata |
| File Systems and File Services | |
| Internal Drive File Systems | Btrfs • ext4 |
| External Drive File Systems | Btrfs • ext4 • ext3 • FAT32 • NTFS • HFS+ • exFAT |
| File Services | SMB • AFP • NFS • FTP • WebDAV • Rsync |
| Supported Protocols | SMB1 (CIFS) • SMB2 • SMB3 • NFSv3 • NFSv4 • NFSv4.1 • Kerberised NFS • iSCSI • HTTP • HTTPS • FTP • SNMP • LDAP • CalDAV |
| Maximum SMB Connections | 30, FSCT-based |
| Windows ACL Integration | Supported |
| NFS Kerberos Authentication | Supported |
| Accounts and Shared Folders | |
| Maximum Local User Accounts | 512 |
| Maximum Local Groups | 128 |
| Maximum Shared Folders | 128 |
| Maximum Shared Folder Sync Tasks | 4 |
| Hybrid Share Folders | 10 |
| Backup, Availability and Virtualisation | |
| Hyper Backup | Data and folder backup • Entire-system backup |
| Synology High Availability | Supported |
| Maximum Syslog Events | 800 events per second |
| VMware vSphere | Supported; consult Synology's current interoperability list for exact versions |
| Microsoft Hyper-V | Windows Server 2025 |
| Citrix XenServer | XenServer 8.4 • XenServer 8 • Citrix Hypervisor 8.2 LTSR CU1 |
| OpenStack | Cinder |
| DSM Applications | |
| Synology Drive | Suggested maximum 50 users • Maximum 500,000 hosted or indexed files |
| Synology Office | Suggested maximum 50 users |
| Synology Chat | Suggested maximum 100 users |
| Download Station | Maximum 80 concurrent download tasks |
| SAN Manager | Maximum 32 iSCSI targets • Maximum 64 LUNs • LUN clone, snapshot and Windows ODX supported |
| MailPlus Server | 5 free email accounts • Suggested maximum 60 users • Additional accounts require licences |
| Snapshot Replication | Maximum 256 snapshots per shared folder • 32 per LUN • 2,048 per system • 32 replication tasks per system |
| Synology Photos | Facial recognition and object recognition supported |
| Media Server | DLNA supported |
| Virtual Machine Manager | Recommended 4 virtual machine instances • Recommended 4 Virtual DSM instances, including 1 free Virtual DSM licence |
| VPN Server | Maximum 8 connections |
| Synology AI Console | Third-party AI model integration supported • Maximum de-identification rate 30 words per second • De-identification requires at least 8 GB memory and Container Manager |
| Surveillance Station | |
| Included Camera Licences | 2 |
| Maximum H.264 IP Camera Capacity | 1080p: 40 channels at 800 fps • 3 MP: 35 channels at 350 fps • 5 MP: 28 channels at 280 fps • 4K: 17 channels at 170 fps |
| Maximum H.265 IP Camera Capacity | 1080p: 40 channels at 1,200 fps • 3 MP: 40 channels at 600 fps • 5 MP: 40 channels at 480 fps • 4K: 20 channels at 200 fps |
| Surveillance Performance Note | Results use Synology test conditions with the default memory configuration and continuous recording; actual capacity varies by codec, resolution, frame rate, drives and concurrent workloads • SRTP reduces the stated performance |
| Compliance and Warranty | |
| Certifications | FCC • CE • BSMI • VCCI • RCM • UKCA • EAC • CCC • KC • BIS |
| Environmental Compliance | RoHS compliant |
| Hardware Warranty | 3 years • Extendable to 5 years with EW201 or Extended Warranty Plus in supported regions |
| Package Contents | |
| Included Items | Main unit × 1 • Accessory pack × 1 • 65 W AC power adapter × 1 • AC power cord × 1 • RJ-45 LAN cable × 2 |