Synology DiskStation DS425+ – 4-Bay NAS

The Synology DiskStation DS425+ – 4-Bay NAS is a powerful 4-bay NAS designed for small businesses and power users who need performance, scalability, and reliable storage. Equipped with an Intel Celeron J4125 quad-core processor and 2 GB DDR4 memory, this NAS delivers strong multitasking capabilities, support for advanced applications, and flexible data protection. With support for Btrfs file system, AES-NI hardware encryption, and VM/Container workloads, the DS425+ is an excellent choice for file sharing, data backup, and multimedia streaming.

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Processor

• Model: Intel Celeron J4125
• Architecture: 64-bit, quad-core
• Base Frequency: 2.0 GHz
• Burst Frequency: Up to 2.7 GHz
• AES-NI Encryption Acceleration: Supported

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Memory

• Installed Memory: 2 GB DDR4 (SO-DIMM)
• Maximum Expandable Memory: Up to 6 GB DDR4

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Storage

• Drive Bays: 4 × 3.5"/2.5" SATA HDD/SSD (hot-swappable)
• Maximum Internal Capacity: Up to 72–88 TB (depending on drive size, e.g., 18 TB/22 TB drives)
• Expansion Units: Not supported (limited to 4 bays)
• RAID Support: Synology Hybrid RAID (SHR), Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
• File System Support:
  • Internal: Btrfs, EXT4
  • External: Btrfs, EXT4, EXT3, FAT, NTFS, HFS+, exFAT

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Networking

• Ethernet Ports: 2 × Gigabit Ethernet RJ-45 (supports Link Aggregation & Failover)

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External Ports

• USB Ports: 2 × USB 3.2 Gen 1 (5 Gbps)

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Performance

• Sequential Read Speed: ~225 MB/s
• Sequential Write Speed: ~220 MB/s
• Encryption Performance: Hardware-accelerated AES-NI ensures minimal performance loss with encrypted data
• Virtualization Support: VMware vSphere, Microsoft Hyper-V, Citrix, OpenStack
• Container Support: Docker, Kubernetes (light workloads)

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Software & Features

• Operating System: Synology DiskStation Manager (DSM)
• Backup Solutions: Active Backup for Business, Synology Drive, Hyper Backup, Snapshot Replication
• Multimedia Applications: Synology Photos, Video Station, Audio Station, Plex Media Server support
• Surveillance: Synology Surveillance Station with IP camera integration
• Cloud Integration: Synology C2, Dropbox, Google Drive, OneDrive, AWS S3

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Power & Efficiency

• Power Supply: External 90 W adapter
• Power Consumption:
  • ~8.5 W (HDD hibernation)
  • ~28.3 W (access)

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Physical Specifications

• Dimensions (H × W × D): 166 × 199 × 223 mm
• Weight: ~2.3 kg (without drives)
• Cooling: 2 × 92 mm fans with multiple modes (silent, cool, full speed)

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Environmental Conditions

• Operating Temperature: 0°C – 40°C
• Relative Humidity: 5% – 95% non-condensing

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Warranty & Support

• Warranty: 3 Years (extendable in some regions)

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Typical Use Cases

• Small business file server with RAID 5/6 redundancy
• Multimedia streaming and Plex server with hardware transcoding
• Virtual machine and container deployment (light workloads)
• Secure backup hub with AES-NI encryption
• Surveillance management with multiple IP cameras

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Key Features

• Intel Celeron J4125 quad-core processor with AES-NI encryption
• 2 GB DDR4 memory (expandable up to 6 GB)
• 4 drive bays with support for RAID 0/1/5/6/10 & SHR
• Dual Gigabit Ethernet with Link Aggregation
• Powerful NAS for business workloads, backups, and multimedia

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Meta Description

Synology DiskStation DS425+ – 4-Bay NAS with Intel Celeron J4125 quad-core CPU, 2 GB DDR4 RAM (expandable to 6 GB), dual Gigabit LAN, AES-NI encryption, and multimedia streaming. Perfect for small businesses and power users. Datasheet