2-Bay NAS with Expandable Capacity

Synology DiskStation DS725neo+

Compact and capable storage for home, small business, and edge environments. The DS725neo+ combines flexible storage expansion, built-in 2.5GbE networking, M.2 NVMe support, file management, backup, collaboration, multi-site synchronization, and video surveillance through Synology DiskStation Manager.

What is the Synology DS725neo+?

The Synology DS725neo+ is a 2-bay network attached storage solution designed to adapt as storage requirements grow. It supports SATA HDDs and SSDs, includes two M.2 NVMe slots, and can expand to seven drive bays with one DX525 expansion unit.

2 Bays 3.5-inch SATA HDD or 2.5-inch SATA SSD support

Up to 168 TB Raw storage after expansion with one DX525

2.5GbE Built-in 2.5GbE connectivity plus a 1GbE LAN port

2 × M.2 M.2 2280 NVMe SSD slots for caching and supported storage pools

Fast, Flexible Storage

Designed to combine compact dimensions with expandable capacity and capable data transfer performance.

Dependable Performance

Sequential performance of up to 283 MB/s read and 224 MB/s write supports file sharing, synchronization, streaming, and backup.

Built-In Networking

One 2.5GbE port and one 1GbE port provide wired networking and support network failover.

M.2 NVMe Support

Two M.2 slots support compatible NVMe SSDs for SSD caching. M.2 storage pools are also supported with applicable Synology-verified SSDs.

Expand Capacity as Your Needs Grow

Start with two internal drive bays and expand the system when additional capacity is required.

The DS725neo+ supports up to 48 TB of raw storage across its two internal bays when using 24 TB drives. Connecting one Synology DX525 expansion unit increases the system to seven drive bays and up to 168 TB of total raw capacity.

Actual usable capacity depends on the drives installed and the selected RAID configuration.

Store, Share, and Protect Your Data

A private storage platform for documents, photos, applications, device backups, and surveillance recordings.

Streamlined File Management

Store, sync, access, and share files across mobile apps, desktop clients, and a browser-based interface. File versioning helps recover earlier versions after accidental deletion, mistakes, or malware.

Photo and Video Management

Back up and organize photos, videos, and other visual assets, organize content into albums, and create secure sharing links.

Team Collaboration

Synology productivity applications support document collaboration, private email, one-to-one chats, group conversations, public channels, and encrypted private channels.

Multi-Site Synchronization

Keep data available across multiple locations while maintaining control of your files.

NAS-to-NAS Synchronization

Automatic one-way or two-way site-to-site synchronization keeps files and folders updated across Synology systems.

Hybrid Cloud Synchronization

Frequently accessed files can be cached locally for rapid access while less frequently used data is retained in cloud storage.

Public Cloud Synchronization

Data can be synchronized with supported cloud services including Backblaze B2, Dropbox, Google Drive, and Microsoft OneDrive, with client-side encryption and configurable synchronization and bandwidth controls.

Backup, Protection, and Recovery

Consolidate backup tasks and protect Synology system data, endpoints, applications, and other workloads.

Consolidate and automate backups for PCs, file servers, virtual machines, SaaS applications, Synology NAS systems, and other supported devices.
Hyper Backup supports Synology system backups to local and remote destinations, external drives, other servers, public clouds, and C2 Storage.
Snapshot Replication provides schedulable data protection with version control for shared folders and LUNs.
Synology Active Backup Suite provides centralized backup and restoration for supported endpoints, virtual machines, Synology NAS, and SaaS applications.

Private Video Surveillance

Use Synology Surveillance Station to manage cameras, recordings, monitoring, playback, and surveillance workflows.

Surveillance Station supports more than 8,700 IP camera models and ONVIF devices. The DS725neo+ supports up to 40 IP camera channels depending on codec and resolution and includes two Surveillance Station camera licenses.

Surveillance recordings can be accessed through web browsers, desktop clients, and mobile apps, with event-based rules and email, SMS, and push notification options.

Centralized Management and Security

DSM provides tools for system access, administration, fleet monitoring, and data protection.

QuickConnect enables browser-based access to the system. Adaptive Multi-Factor Authentication can be triggered for suspicious external logins, while customizable delegation roles allow administrators to assign selected management responsibilities without granting access to critical system settings.

Synology Central Management System provides a single interface for monitoring and managing multiple Synology NAS systems.

Frequently Asked Questions

Key information about the Synology DiskStation DS725neo+.

How many drive bays does the Synology DS725neo+ have?

It has two internal drive bays. One DX525 expansion unit can increase the system to a maximum of seven drive bays.

What network ports are built into the DS725neo+?

It includes one 2.5GbE RJ-45 LAN port and one 1GbE RJ-45 LAN port.

Which internal drives does the DS725neo+ support?

The two main drive bays support 3.5-inch SATA HDDs or 2.5-inch SATA SSDs. The system also includes two M.2 2280 NVMe SSD slots.

How much memory is installed?

The DS725neo+ includes 4 GB DDR4 non-ECC SODIMM memory and supports a maximum memory capacity of 32 GB using two 16 GB modules.

What is the maximum raw storage capacity?

Using 24 TB drives, the supplied information specifies up to 48 TB across the two internal bays and up to 168 TB after expansion to seven bays with a DX525.

Can the M.2 slots be used for SSD caching?

Yes. Compatible M.2 NVMe SSDs can be used for SSD caching. Supported Synology-verified SSDs can also be used to create M.2 storage pools.

How many cameras can Surveillance Station support?

The supplied specifications list support for up to 40 IP camera channels depending on codec and resolution. Two camera licenses are included by default.

What warranty is supplied with the DS725neo+?

The supplied specifications list a three-year hardware warranty, with extension to five years available through eligible Synology extended warranty options.

Drive compatibility: Synology states that compatible drives are required for full functionality, reliability, and performance. Drives and SSDs are sold separately.

Some Synology cloud services and additional Surveillance Station or MailPlus licenses require separate subscriptions or licenses as specified by Synology.

(DS725NEOPLUS)

Synology DS725neo+ Specifications

Hardware, storage, networking, DSM, application, surveillance, environmental, packaging, and warranty specifications.

Specification	Details
Processor
CPU Model	AMD Ryzen R1600
CPU Quantity	1
CPU Cores	2
CPU Threads	4
CPU Architecture	64-bit
CPU Frequency	2.6 GHz base / 3.1 GHz turbo
Hardware Encryption Engine	Yes
Memory
System Memory	4 GB DDR4 non-ECC SODIMM
Pre-installed Memory	4 GB (4 GB × 1)
Total Memory Slots	2
Maximum Memory Capacity	32 GB (16 GB × 2)
Memory Notes	Synology recommends Synology memory modules for optimum compatibility and reliability. For multi-module configurations, all modules must be identical and share the same model number.
Storage
Drive Bays	2 × 3.5-inch SATA HDD or 2.5-inch SATA SSD 2 × M.2 2280 NVMe SSD
Maximum Drive Bays with Expansion	7 (DX525 × 1)
Hot-Swappable Drives	Yes Hot swapping is not supported by the M.2 SSD slots.
Internal Raw Capacity	Up to 48 TB using 24 TB drives across two bays
Raw Capacity with Expansion	Up to 168 TB using 24 TB drives after expansion to seven bays
SSD Cache	Supported with select compatible SSDs
M.2 SSD Storage Pool	Supported Creating M.2 storage pools requires Synology-verified SSDs.
Networking and External Ports
2.5GbE LAN	1 × RJ-45 2.5GbE LAN port
1GbE LAN	1 × RJ-45 1GbE LAN port
USB	1 × USB 3.2 Gen 1 port
Expansion Port	1 × USB Type-C expansion port
1GbE MTU	Maximum transmission unit size of 1,500 bytes
Wake on LAN / WAN	Yes
Performance
Sequential Read	Up to 283 MB/s
Sequential Write	Up to 224 MB/s
Performance Note	Actual performance may vary depending on testing environment, usage, configuration, drive performance, enabled features, and additional workloads.
Physical Specifications
Dimensions	166 mm × 106 mm × 223 mm (H × W × D)
Weight	1.51 kg
System Fan	92 mm × 92 mm × 1
Fan Modes	Full-Speed Mode, Cool Mode, Quiet Mode
Adjustable Front LED Brightness	Yes
Kensington Security Slot	Included
Power and Acoustics
Power Adapter	65 watts
AC Input Voltage	100V to 240V AC
Power Frequency	50/60 Hz, single phase
Power Consumption — Access	20.41 watts
Power Consumption — HDD Hibernation	7.87 watts
BTU — Access	69.61 BTU/hr
BTU — HDD Hibernation	26.84 BTU/hr
Noise Level	17.9 dB(A)
Power Recovery	Yes
Scheduled Power On / Off	Yes
Operating Environment
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
Maximum Operating Altitude	5,000 m
Certifications and Environment
Certifications	FCC, CE, BSMI, VCCI, RCM, UKCA, EAC, CCC, KC, BIS
Environmental Compliance	RoHS compliant
DSM Storage Management
Maximum Single Volume Size	200 TB with 32 GB memory 108 TB
Maximum Internal Volumes	32
SSD Read/Write Cache	Yes
SSD TRIM	Yes
Storage Efficiency	Supported
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 an HDD	Synology Hybrid RAID, JBOD, RAID 5 and RAID 6 with Expansion Unit
File Systems
Internal Drives	Btrfs, ext4
External Drives	Btrfs, ext4, ext3, FAT32, NTFS, HFS+, exFAT
File Services
File Protocols	SMB, AFP, NFS, FTP, WebDAV, Rsync
Maximum SMB Connections	30, FSCT-based
Windows ACL Integration	Yes
NFS Kerberos Authentication	Yes
Accounts and Shared Folders
Maximum Local User Accounts	512
Maximum Local Groups	128
Maximum Shared Folders	128
Maximum Shared Folder Sync Tasks	4
Backup, Replication and High Availability
Maximum Hybrid Share Folders	10
Hyper Backup — Folder and Package Backup	Yes
Hyper Backup — Entire System Backup	Yes
Synology High Availability	Supported
Syslog Events per Second	800
Virtualization
VMware vSphere	ESXi 8.0 U2, 8.0 U1, 8.0, 7.0 U3, 7.0 U2, 7.0 U1, 7.0, 6.7 U3, 6.7 U2, 6.7 U1, 6.7, 6.5 U3, 6.5 U2, 6.5 U1, 6.5
Microsoft Hyper-V	Windows Server 2025
Citrix XenServer	XenServer 8.4, XenServer 8, Citrix Hypervisor 8.2 LTSR CU1
OpenStack	Cinder
General DSM Specifications
Supported Protocols	SMB1 (CIFS), SMB2, SMB3, NFSv3, NFSv4, NFSv4.1, NFS Kerberized sessions, iSCSI, HTTP, HTTPS, FTP, SNMP, LDAP, CalDAV
Supported Browsers	Chrome, Firefox, Edge, Safari
Security	Firewall, encrypted shared folders, SMB encryption, FTP over SSL/TLS, SFTP, rsync over SSH, login auto block, Let's Encrypt support, HTTPS with customizable cipher suite
Synology AI Console
Third-Party AI Model Integration	Yes
Maximum De-Identification Rate	30 words per second
De-Identification Requirement	At least 8 GB of memory and Container Manager installed
Applications
Synology Chat — Maximum Users	100
Download Station — Concurrent Tasks	80
SAN Manager — Maximum iSCSI Targets	32
SAN Manager — Maximum LUNs	64
LUN Clone / Snapshot / Windows ODX	Yes
MailPlus Free Email Accounts	5; additional accounts require licenses
MailPlus Maximum Users	60
Media Server	DLNA compliant
Synology Photos Facial Recognition	Yes
Synology Photos Object Recognition	Yes
Snapshot Replication
Maximum Snapshots per Shared Folder	256
Maximum Snapshots per LUN	32
Maximum Snapshots per System	2,048
Maximum Replication Tasks — Shared Folders	32
Maximum Replication Tasks — LUNs	16
Maximum Replication Tasks per System	32
Surveillance Station
Default Camera Licenses	2; additional cameras require licenses
H.264 Camera Capacity	1080p: 40 channels / 800 FPS 3M: 35 channels / 350 FPS 5M: 28 channels / 280 FPS 4K: 17 channels / 170 FPS
H.265 Camera Capacity	1080p: 40 channels / 1200 FPS 3M: 40 channels / 600 FPS 5M: 40 channels / 480 FPS 4K: 20 channels / 200 FPS
Surveillance Performance Note	Performance figures were obtained with the device fully populated with drives, default memory, and continuous recording. Actual capabilities vary with configuration, drive performance, enabled features, and other workloads.
Synology Drive and Office
Synology Drive Maximum Users	50
Synology Drive Maximum Hosted Files	500,000
Synology Office Maximum Users	50
Virtual Machine Manager and VPN
Recommended Virtual Machine Instances	4
Recommended Virtual DSM Instances	4, including 1 free license
VPN Server Maximum Connections	8
Package Contents
In the Box	Main Unit × 1 Accessory Pack × 1 AC Power Adapter × 1 AC Power Cord × 1 RJ-45 LAN Cable × 2
Optional Accessories
DDR4 non-ECC SODIMM	D4NS01-4G
DDR4 ECC SODIMM	D4ES04-4G / D4ES03-8G / D4ES03-16G
Expansion Unit	DX525
Enterprise 3.5-inch SATA HDD	HAT5300 Series
Plus 3.5-inch SATA HDD	HAT3300 Series
Enterprise 2.5-inch SATA SSD	SAT5200 Series
Enterprise M.2 2280 NVMe SSD	SNV3400 and SNV5400 Series
Warranty
Hardware Warranty	3 years, extendable to 5 years with EW201 or Extended Warranty Plus Availability of extended warranty options varies by region.

SKU	DS725NEOPLUS
Brand	SYNOLOGY
Shipping Weight	1.5100kg
Shipping Width	0.160m
Shipping Height	0.230m
Shipping Length	0.100m
Shipping Cubic	0.003680000m3

Manufacturer Warranty: 3 Years Limited Warranty
Manufacturer Contact Info: http://www.synology.com