Conquer Data Chaos with High-Speed, Versatile Storage

Empower your home or business with a compact 4-bay NAS—advanced 2.5GbE networking, SSD/HDD flexibility, M.2 NVMe caching, and seamless cloud, backup, and surveillance features, all managed through Synology’s intuitive DSM.

Highlights

• Up to 80 TB raw storage (4 × 20 TB drives)

• Built-in 2.5GbE port for fast network transfers

• Over 278 MB/s read and 281 MB/s write sequential speeds

• Supports 2 x M.2 NVMe SSD slots for caching

• Store, share, sync, and backup data across multiple sites

• Manage up to 40 IP cameras with Surveillance Station

• Comprehensive backup for PCs, servers, VMs, and SaaS

• Hybrid cloud and NAS-to-NAS multi-site sync

• Centralised management for fleets with Active Insight and CMS

• 3-year hardware warranty, extendable to 5 years

Key Features

Storage & Performance

• Drive Bays: 4 (up to 80 TB raw, 4 × 20 TB)

• Connectivity: 1 × 2.5GbE LAN port

• Sequential Speeds: 278 MB/s read, 281 MB/s write

• M.2 NVMe Slots: 2, for SSD cache (acceleration)

• Flexible bays: Support 2.5"/3.5" SATA HDD or SSD

Data Management & Collaboration

• File Server: Store, sync, access, and share data anywhere

• File Versioning: Easy roll-back for accidental deletions or malware

• Private Cloud: Secure access via mobile, desktop, or browser

• Photo Solutions: Automatic backup, albums, and secure sharing

Backup & Protection

• Multi-Endpoint Backup: PCs, servers, VMs, SaaS (Google Workspace, Microsoft 365)

• Immutable Snapshots: Tamper-proof, scheduled, offsite replicable

• Cloud Sync: Connect with BackBlaze B2, Dropbox, Google Drive, Microsoft OneDrive

• NAS-to-NAS Sync: Automatic one-way or two-way, site-to-site alignment

• Hybrid Cloud: Local caching with cloud storage to optimise access and reduce costs

Surveillance

• Surveillance Station: Manage up to 40 IP cameras, central monitoring, encrypted cloud backup

• Compatibility: Over 8,700 validated IP camera models

• Dual Cloud Recording: End-to-end encrypted cloud backup for footage

Centralised Management

• CMS: Group policies, batch updates, global fleet control

• Active Insight: Cloud-based monitoring and health analytics for multiple NAS units

Drives & Reliability

• Optimised for Synology HDD/SSD: Enterprise and Plus Series

• Enhanced integration for consistent performance and system stability

Network Integration

• Compatible with Synology routers (RT6600ax, WRX560) for maximised 2.5GbE performance, VLANs, and advanced security features

Warranty & Support

• 3-year standard warranty, extendable to 5 years in selected regions

Summary

The Synology DS425+ combines high-capacity 4-bay storage, fast 2.5GbE networking, M.2 NVMe caching, and robust data management tools for homes and growing businesses. With up to 80TB storage, seamless file sync, hybrid cloud, advanced backup, and up to 40-camera surveillance support, this NAS delivers scalable, secure, and intuitive private cloud storage—backed by Synology’s renowned reliability.