Synology DiskStation DS423 – 4-Bay NAS

The Synology DiskStation DS423 – 4-Bay NAS is a cost-effective 4-bay NAS designed for home users and small businesses that need reliable data storage, media streaming, and file sharing. Powered by the Realtek RTD1619B quad-core CPU and 2 GB DDR4 non-ECC memory, it balances affordability with solid performance.

The DS423 supports Btrfs file system, centralized backup, and seamless cloud synchronization, making it an excellent entry-level solution for personal cloud, multimedia libraries, and light office workloads.

Processor

• Model: Realtek RTD1619B
• Architecture: 64-bit quad-core
• Base Clock Speed: 1.7 GHz

Memory

• Installed Memory: 2 GB DDR4 (non-ECC, onboard)
• Expandable: Not expandable (fixed 2 GB)

Storage

• Drive Bays: 4 × 3.5″/2.5″ SATA HDD/SSD (hot-swappable)
• Maximum Internal Capacity: Up to 72–88 TB (4 × 18 TB or 4 × 22 TB, depending on drive support)
• Expansion Units: Not supported (limited to 4 bays only)
• RAID Support: 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

Networking

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

External Ports

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

Performance

• Sequential Read Speed: ~226 MB/s
• Sequential Write Speed: ~224 MB/s
• Encryption: AES-NI not supported (software encryption only)
• Virtualization: Not supported (basic NAS functions only)

Software & Features

• Operating System: Synology DiskStation Manager (DSM)
• Backup Solutions: Synology Drive, Active Backup for Business (light workloads), Hyper Backup, Snapshot Replication
• Multimedia: Synology Photos, Audio Station, Video Station, DLNA/UPnP media server
• Surveillance: Synology Surveillance Station with IP camera support
• Cloud Integration: Google Drive, Dropbox, OneDrive, AWS S3, Synology C2

Power & Efficiency

• Power Supply: External 90 W adapter
• Power Consumption:
  • ~4.4 W (HDD hibernation)
  • ~26.2 W (access)

Physical Specifications

• Dimensions (H × W × D): 184 × 168 × 230 mm
• Weight: 2.18 kg (without drives)
• Cooling: 2 × 92 mm fans with adjustable modes (low-noise, cool, full speed)

Environmental Conditions

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

Warranty & Support

• Warranty: 2 Years (extendable in some regions)

Typical Use Cases

• Home NAS for centralized file storage and backups
• Multimedia server for photos, videos, and music streaming
• Light business storage with RAID 5/6 redundancy
• Personal cloud with cross-device synchronization
• Entry-level surveillance recording solution

Key Features

• Quad-core Realtek RTD1619B processor at 1.7 GHz
• 2 GB DDR4 RAM (non-expandable)
• 4-bay NAS with up to 88 TB storage capacity
• Dual Gigabit Ethernet with Link Aggregation
• Affordable entry-level NAS for home and small office use

Meta Description

Synology DiskStation DS423 4-Bay NAS with Realtek RTD1619B quad-core CPU, 2GB DDR4 RAM, dual Gigabit LAN, Btrfs file system, and multimedia streaming. Ideal for home storage and light business workloads.

Datasheet