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Synology DS423+ 4-Bay NAS DiskStation
Synology DS423+ 4-Bay NAS DiskStation
Synology DS423+ 4-Bay NAS DiskStation
Synology DS423+ 4-Bay NAS DiskStation
Synology DS423+ 4-Bay NAS DiskStation
Synology DS423+ 4-Bay NAS DiskStation
Synology

Synology DS423+ 4-Bay NAS DiskStation

★★★★★4.7 (8458 reviews)

Centralize your files, photos, and backups with the Synology DS423+ 4-bay NAS featuring DiskStation Manager.

$519.90*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Synology DS423+ is a four-bay NAS designed to serve as a centralized hub for file storage, data backup, media streaming, and even surveillance. Running Synology's proprietary DiskStation Manager operating system, it provides a polished, browser-based interface that bundles applications for photo management, file sharing, automated backups, and IP camera recording — all without requiring separate software licenses. The four SATA bays accommodate both 3.5-inch and 2.5-inch drives, giving you the flexibility to configure RAID arrays that balance storage capacity with data redundancy.

Beyond basic file storage, the DS423+ supports cross-platform access so you can reach your data from Windows, macOS, Linux, and mobile devices. Synology's ecosystem of first-party apps — including Synology Drive, Synology Photos, and Hyper Backup — makes it straightforward to replace or supplement cloud services with a private, locally hosted solution. Whether you need a reliable backup target for multiple workstations, a personal cloud for remote file access, or a compact surveillance server, the DS423+ consolidates those roles into a single energy-efficient appliance.

Key Features

Leverage built-in file and photo management, data protection, and surveillance solutions

Access, share, and sync your data and media easily across different operating systems and devices

Check Synology knowledge center or YouTube channel for help on product setup and additional information

Check the product specification page for the software or application you want to use

SATA device only

Specifications

Brand
Synology
Model
DS423+
Number of Bays
4
Drive Compatibility
SATA devices only
Operating System
Synology DiskStation Manager (DSM)
Built-in Applications
File and photo management, data protection, surveillance
Color
Black

Pros & Cons

👍 Pros

  • Four drive bays provide substantial raw storage capacity with room for redundancy through RAID configurations
  • Four-bay design allows flexible storage expansion and RAID configurations for data protection
  • Built-in DSM software provides file management, photo organization, backup, and surveillance without additional licensing
  • Synology DSM includes a comprehensive suite of built-in applications for file management, photo organization, backup, and surveillance at no extra cost
  • Cross-platform file access and syncing works seamlessly across Windows, macOS, Linux, and mobile devices
  • Cross-platform file access and syncing works across Windows, macOS, Linux, and mobile devices
  • Compact enclosure consolidates multiple server functions into a single quiet desktop unit
  • Diskless design lets you choose your own drives to match your capacity and budget requirements
  • Supports private cloud functionality so you can reduce or eliminate reliance on third-party cloud storage subscriptions

👎 Cons

  • Sold without drives, so the total cost of a usable setup is significantly higher than the NAS unit alone
  • Sold diskless, so the total cost increases significantly once you purchase four drives
  • SATA-only compatibility means no NVMe-only drive configurations in the main bays
  • Limited to SATA devices only, with no NVMe SSD bay support for cache acceleration
  • A 4-bay unit limits maximum raw capacity compared to larger 6 or 8-bay models for users with growing storage needs
  • Initial setup and DSM configuration can be overwhelming for users new to NAS devices
  • Four bays may be limiting for users who anticipate needing more than roughly 80TB of raw storage
  • Initial setup and configuration of DSM, RAID, and network settings has a learning curve for users new to NAS devices

Frequently Asked Questions

No, this is a diskless NAS enclosure. You need to purchase compatible SATA hard drives or SSDs separately to install in the four drive bays.
No, the DS423+ is sold diskless. You need to purchase compatible SATA hard drives or SSDs separately.
It runs Synology DiskStation Manager (DSM), a browser-based OS that provides file management, backup, surveillance, and media streaming applications out of the box.
The DS423+ supports SATA devices only. This includes standard 3.5-inch SATA hard drives and 2.5-inch SATA SSDs.
It runs Synology DiskStation Manager (DSM), a Linux-based operating system with a web browser interface that provides file management, backup, media streaming, surveillance, and many other applications.
The DS423+ has four drive bays and supports SATA devices only — including 3.5-inch and 2.5-inch SATA HDDs and SSDs.
Yes, Synology QuickConnect and DSM's built-in tools let you access, sync, and share files remotely across different operating systems and devices without complex network configuration.
Yes, Synology provides tools like QuickConnect and Synology Drive that let you access, share, and sync files across devices and operating systems from anywhere with an internet connection.
With four bays, you can configure RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, or Synology's own Hybrid RAID (SHR), which optimizes storage capacity when using drives of different sizes.
Yes, with four bays you can configure various RAID levels including Synology Hybrid RAID (SHR), RAID 0, RAID 1, RAID 5, RAID 6, and RAID 10 for data redundancy and performance.

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