The Synology DiskStation DS425+ is a high-performance 4-bay NAS designed for home users, small offices, and creative teams seeking centralized storage and efficient data management. This NAS allows you to store, backup, share, and access files securely across multiple devices while maintaining full control over your data.

Equipped with a quad-core Intel Celeron processor and 2 GB DDR4 RAM (expandable up to 6 GB), the DS425+ delivers fast, reliable performance for multi-user access, file sharing, backups, media streaming, and business applications. With four SATA drive bays and two M.2 NVMe slots for SSD caching or storage pools, it offers flexibility for storage expansion and improved performance.

With built-in 2.5GbE networking, sequential read/write speeds of up to ~278 MB/s and ~281 MB/s, and support for RAID 0/1/5/6/10/JBOD/SHR, the DS425+ is ideal for medium- to high-volume workloads. Advanced applications, including private cloud storage, multi-device synchronization, and surveillance video management (supporting up to 40 IP cameras), make it a robust, all-in-one solution for modern storage needs.

Technical / Key Specifications

Specification	Details
Drive Bays	4 × 3.5″/2.5″ SATA HDD/SSD (hot-swappable) + 2 × M.2 2280 NVMe slots for caching
Maximum Raw Storage	Up to ~80 TB (4 × 20 TB drives)
CPU	Quad-Core Intel Celeron J4125, 2.0 GHz base / 2.7 GHz burst
Memory	2 GB DDR4 (non-ECC), expandable to 6 GB
Network Ports	1 × 2.5GbE RJ‑45, 1 × 1GbE RJ‑45
USB Ports	2 × USB 3.2 Gen 1
Supported RAID / Storage Modes	Basic, JBOD, RAID 0/1/5/6/10, SHR (Synology Hybrid RAID)
Sequential Throughput	~278 MB/s read, ~281 MB/s write
Supported Drive Types	3.5″ SATA HDD, 2.5″ SATA SSD, M.2 2280 NVMe SSD
Supported Applications	File sharing & sync, backup solutions, media streaming, surveillance storage, private cloud, collaboration tools
Dimensions & Weight	166 × 199 × 223 mm, 2.18 kg