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.