Synology

Synology DS419slim 4-Bay 2.5" Diskless NAS

4.3 (26 reviews)

Ultra-compact 4-bay NAS with 2.5-inch drive support, dual-core encryption, and mobile access for smart home storage.

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Overview

The Synology DS419slim is designed for users who need networked storage but lack the space for a conventional NAS enclosure. By restricting drive support to 2.5-inch form factors, Synology has created a unit that can sit unobtrusively on a desk, bookshelf, or media console. Despite its diminutive size, the DS419slim houses four drive bays, enabling RAID configurations for data protection—an important consideration for anyone storing irreplaceable photos, videos, or documents. The dual-core CPU with hardware encryption keeps file transfers secure without bottlenecking performance, and dual Gigabit Ethernet ports with link aggregation deliver sequential read speeds exceeding 220 MB/s.

Running Synology's DiskStation Manager operating system, the DS419slim provides a browser-based interface for managing storage, users, and a wide ecosystem of installable packages—from media servers to surveillance station to Docker containers. Mobile apps for iOS and Android extend access beyond the local network, making it straightforward to browse files, stream media, or back up phone photos from anywhere. The failover support on the dual Ethernet ports adds a layer of network reliability, ensuring the NAS remains accessible even if one connection drops. For smart home enthusiasts or small offices where space is at a premium, the DS419slim offers a genuinely capable NAS in an unusually portable package.

Key Features

A 4-bay small footprint NAS for building smart home with 2. 5” Drive support

Dual-core CPU with hardware encryption engine

Over 220 MB/s reading, 94 MB/s writing through dual Gigabit Link Aggregation with failover support

Effortless management of music, video and photos as personal multimedia library

Anywhere access with iOS and Android ready mobile apps

Specifications

Brand
Synology
Model
DS419slim
Drive Bays
4 x 2.5-inch
CPU
Dual-Core with Hardware Encryption Engine
Sequential Read Speed
Over 220 MB/s
Sequential Write Speed
94 MB/s
Network
Dual Gigabit Ethernet with Link Aggregation
Failover Support
Yes
Mobile Access
iOS and Android Apps

Pros & Cons

👍 Pros

  • Extremely compact footprint fits easily on a desk or shelf where a standard NAS would not
  • Four bays allow for RAID redundancy and meaningful total storage capacity despite the small chassis
  • Dual Gigabit link aggregation with failover provides both increased throughput and network resilience
  • Hardware encryption engine handles encrypted transfers without taxing the CPU for other tasks
  • DiskStation Manager software provides a mature, full-featured operating system for file management and apps

👎 Cons

  • Limited to 2.5-inch drives, which offer lower maximum capacities and higher cost per terabyte than 3.5-inch drives
  • Writing speed of 94 MB/s is noticeably slower than reading speed, which may affect large upload workloads
  • Dual-core processor may struggle under heavy simultaneous use such as transcoding and multiple file transfers
  • No NVMe or SSD cache slots beyond the four main bays for performance acceleration

Frequently Asked Questions

The DS419slim exclusively supports 2.5-inch drives (both SSDs and HDDs). It does not accommodate 3.5-inch drives, which is the trade-off that enables its compact form factor.
Yes, the dual-core CPU includes a built-in hardware encryption engine, allowing encrypted file transfers without significant performance degradation.
Yes, Synology provides iOS and Android apps that allow you to access, manage, and stream files from your NAS anywhere with an internet connection via Synology's QuickConnect service.
With dual Gigabit link aggregation, the DS419slim delivers over 220 MB/s sequential reading and 94 MB/s sequential writing speeds.
Yes, with four bays you can configure various RAID levels including Synology Hybrid RAID, RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 through Synology's DiskStation Manager software.