The Synology DS725+ is a compact, two-disk NAS solution ideal for home, home office or smaller enterprise/edge environments. The unit, which already comes with 4GB ECC DDR4 RAM as standard, provides significantly better performance thanks to the 2025 update, although it uses the same (AMD Ryzen R1600 2‑core) processor as before.

In addition to 1GbE, we can find the new 2.5GbE port among the rear connectors, and a USB-C expansion slot that allows for an additional DX525 additional unit - so a configuration of up to 7 disks can be assembled, reaching a raw capacity of 140TB.

The DS725+ also has two M.2 NVMe SSD slots, offering an excellent solution for SSD cache or all-flash storage, although it only supports PCIe 3.0 speeds.

The 2.5GbE network connection provides up to 276MB/s read and 224MB/s write speeds, while the included Synology HDD/SSD compatibility tests guarantee more than 7000 hours of quality control

The device runs the DSM operating system, which provides reliable data management capabilities: private cloud (Synology Drive), central backup (Active Backup Suite), and video surveillance (Surveillance Station) can also be installed on it.

The combination of the M.2 SSD cache and the speed of 2.5GbE enables fast and efficient operation for multi-user or media content management tasks.

Overall, the DS725+ is a well-balanced, future-proof 2-disk NAS equipped with ECC memory that offers higher network bandwidth and expandability while maintaining the stability and reliability of the Synology platform — especially recommended for those who are already building on the Synology ecosystem and are looking for a suitable device for data control, collaboration or IP camera projects.