I use these more for NVR Camera systems. Now that Synology has stopped stunt with forcing you to use expensive synology drives, this system works great. I already had two WD Red drives and they fired right up. The other thing that's good about Synology Camera system is they use almost any brand of camera, as long as the camera uses the industry standard ONVIF. I used this system to replace a 10 year old HikVision NVR which only worked on Internet Explorer. Almost all Synology systems come with a 2 camera free license, so to add more cameras runs about $50/camera one time license fee.
As to the DS725+, this is one of the best values for the money Synology has. It's small, and for a NVR system, two disks in mirror mode provides enough backup to keep the system going for a while. It's using very little power compared to the older HikVision system and the DS725+ understands a much newer [H.265 and H.265+] standard. So I'm using less local bandwidth and saving on storage space while getting a clearer picture.
Frequently bought together
This item: Synology 2-Bay DiskStation DS725+ (Diskless)
$746.00
Get it Mar 25 - 26
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$349.99
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Product information
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From the manufacturer
Scalable performance that fits in any environment
What's different?
With two bays and the ability to expand to seven, DS725+ is a popular choice for users who need reliable, mutli-user file sharing, efficient backup options, and work collaboration tools in a quiet, compact form factor.
At 17.9 dB(A), the sound level is quieter than a whisper and close to the ambient noise of a very still room or a quiet library at night.
Pair DS725+ with Synology RT6600ax or WRX560 to maximize 2.5GbE connectivity. Enjoy high-speed transfers and secure your network with VLANs, threat prevention and web filtering — all through a familiar Synology interface.
When SSD cache makes perfect sense
Utilize M.2 NVMe SSDs to create an SSD cache when your workload involves frequent access to small, random files or repeated read/write operations.
- Deploying multiple containers
- Scrolling through large photo collections
- Running a file server with relatively small files accessed concurrently
When you need more speed
Utilize SATA 2.5” SSDs for demanding workloads like databases to achieve fast response, low latency and quiet operation.
- Ensures consistent performance under heavy I/O loads
- Reduces latency for time‑sensitive applications
- Operates quietly, ideal for offices or workspaces where noise matters
- Built-in 2.5GbE port and over 276/224 MB/s sequential read/write
- Improve efficiency by adding SNV3000 or SNV5000 series M.2 SSDs without sacrificing a drive bay
- ECC RAM ensures error-free, reliable performance under heavy workloads
- Add an extra five drive bays at any time with the DX525 expansion unit
- Use built-in tools to back up data on PC, Macs, mobile and cloud services
- Deploy a hybrid cloud to scale storage capacity seamlessly via Synology C2 cloud
- Synchronize files across locations and devices automatically
Synology's end-to-end surveillance systems allow you to protect your home or business while keeping your data private
Unified monitoring made easy
Manage every detail of your surveillance system with precision using Surveillance Station, a centralized platform built for scalable, smart monitoring.
Multi-camera live view adapts to your needs with customizable layouts. Intelligent scheduling lets you fine-tune recording quality, motion triggers and alerts with ease.
Cameras made by Synology
Synology IP cameras feature built-in edge AI for accurate detection with local processing. Without sending footage to the cloud, Synology Cameras feature AI detection for people, vehicles and intrusions, all processed locally to enhance efficiency and cut down on false alerts. Choose wireless for easy setup or PoE for stable power and connectivity. All models are built for reliable outdoor use. No Surveillance Station license needed.
Compatible with a wide range of devices
Surveillance Station supports and integrates over 8,800 IP cameras from 180 renowned brands. This lets you connect your existing IP cameras and peripherals, such as access controllers and speakers, without needing to replace them.
Private cloud security
Secure your surveillance system with military-grade encryption that protects footage from hackers and unauthorized access attempts.
Built-in VPN server enables secure remote monitoring without exposing your network to external threats or vulnerabilities. Zero-trust architecture ensures only authorized users access specific cameras and recordings through verified authentication protocols.
Synology hard drives offer proven reliability and compatibility, achieved through a comprehensive testing regimen on Synology devices, spanning over 1,000 stress test cycles and 500,000+ hours.
What can I do with Synology?
- Back up PCs, Macs and mobile devices
- Stream photos, videos and music
- Access and share files securely
- Replace cloud services such as Dropbox
- Run Docker and virtual machines
- Collaborate on files in real-time
- Synchronize files and folders between Synology NAS devices
- Use immutable snapshots to create permenant, point-in-time system backups
Dedicated to security and data protection
25 Years of Innovation
Network Attached Storage (NAS) provides a centralized location on a network to store data. Synology NAS goes beyond that, enabling you to build your own private cloud eliminating vulnerabilities associated with the internet or public cloud.
Our Product Security Incident Response Team (PSIRT) provides 24-hour response to vulnerabilities, ensuring rapid patches when threats emerge. We employ top security researchers through our Bug Bounty Program and lead community events such as Pwn2Own.
- Encrypt files, folders and volumes with to keep personal data inaccessible, even if the NAS is stolen
- Create firewall rules, automatically block IP addresses with too many failed login attempts
- Enable 2FA or choose from a range of passwordless login methods such as USB logins, Windows Hello or Apple Touch ID
- Enable NAS-to-NAS backups from your primary NAS to an off-site Synology NAS on a schedule with Synology Hyper Backup.
- Complete the 3-2-1 backup strategy with C2 Storage for Hyper Backup to ensure your data is accessible in any case
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| CPU Model | Realtek RTD1619B | AMD Ryzen R1600 | Intel Celeron J4125 | AMD Ryzen V1500B | AMD Ryzen V1500B | Intel Xeon D-1531 |
| System Memory | 1 GB DDR4 non-ECC | 4 GB DDR4 ECC SODIMM | 2 GB DDR4 non-ECC | 4 GB DDR4 ECC SODIMM | 4 GB DDR4 ECC SODIMM | 16 GB DDR4 ECC SODIMM |
| Maximum Memory Capacity | no data | 32 GB (16 GB x 2) | 6 GB (2 GB + 4 GB) | 32 GB (16 GB x 2) | 32 GB (16 GB x 2) | 48 GB (8 GB x 2 + 16 GB x 2) |
| RJ-45 1GbE LAN Port | 1 | 1 | 1 | no data | 4 | 2 |
| RJ-45 2.5GbE LAN Port | no data | 1 | 1 | 2 | no data | no data |
| USB-C Expansion Port | null | 1 | no data | 1 | no data | no data |
| PCIe Expansion (10/25GBE) | no data | no data | no data | no data | 1 x Gen3 x8 slot (x4 link) | 2x Gen3 x8 slot (x8 link) |
| Max Number of Files in Drive | 100,000 | 500,000 | 500,000 | 500,000 | 1,000,000 | 15,000,000 |
| Suggested max cameras@FPS (H.264) | 1080p: 12 @ 360, 5MP: 12 @ 150, 4K: 11 @ 110 | 1080p: 40 @ 800, 5MP: 28 @ 280, 4K: 17 @ 170 FPS | 1080p: 40 @ 800, 5MP: 28 @ 280, 4K: 17 @ 170 | 1080p: 40 @ 1050, 5MP: 30 @ 360, 4K: 20 @ 200 | 1080p: 40@1050, 5MP: 40 @ 440, 4K: 32 @ 320 | 1080p: 90 @ 2,700, 5MP: 90 @ 1,500, 4K: 55 @ 1,080 |
| Suggested max cameras@FPS (H.266) | 1080p: 12 @ 360, 5MP: 12 @ 350, 4K: 12 @ 200 | 1080p: 40 @ 1200, 5M: 40 @ 480, 4K: 20 @ 200 | 1080p: 40 @ 1200, 5MP: 40 @ 480, 4K: 20 @ 200 | 10801080p: 40 @ 1200, 5MP: 40 @ 600, 4K: 30 @ 300 | 1080p: 40 @ 1200, 5MP: 40 @ 600, 4K: 40 @ 480 | 1080p: 90 @ 2,700, 5MP: 90 @ 1,500, 4K: 90 @ 1,080 |
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Top reviews from other countries
- Zaphod BeeblebroxReviewed in the United States on January 21, 2026
Very good house NVR system for the price.
Verified Purchase - BAR9701Reviewed in the United States on December 7, 2025
Synology NAS has bigger problems that what brand of disk you are using ....
Verified Purchase - Jesus OrtegaReviewed in the United States on February 27, 2026
Great for using surveillance system
Verified Purchase - Dusty DinoReviewed in the United States on November 27, 2025
Great option for personal or small business use.
Verified Purchase - JakeReviewed in the United States on February 8, 2026
Awesome!
Verified Purchase
