Synology DiskStation DS423 4-Bay NAS Enclosure

BH #SYDS423 • MFR #DS423
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Synology DiskStation DS423 4-Bay NAS Enclosure
Key Features
  • 4 x 3.5/2.5" SATA HDD/SSD Drive Bays
  • Realtek RTD1619B Quad-Core
  • 2GB of DDR4 RAM
  • 2 x Gigabit Ethernet Ports
The DiskStation DS423 4-Bay NAS Enclosure from Synology lets you consolidate, organize, and secure your data. Leverage built-in solutions in Synology DiskStation Manager (DSM) to sync and access files across multiple devices, create a digital photo hub for work or leisure, or secure your premises with intelligent video surveillance tools.
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Synology DS423 External HDD/SSD Overview

The DiskStation DS423 4-Bay NAS Enclosure from Synology lets you consolidate, organize, and secure your data. Leverage built-in solutions in Synology DiskStation Manager (DSM) to sync and access files across multiple devices, create a digital photo hub for work or leisure, or secure your premises with intelligent video surveillance tools.

The DS423i s equipped with four drive bays that are capable of natively supporting 3.5" SATA hard drives, as well as 2.5" SATA hard drives and SSDs. Its CPU is a Realtek RTD1619B Quad-Core and its 2GB of DDR4 RAM allows frequently-used files and applications to be quickly accessed. Also featured are two USB-A 3.2 Gen 1 ports, which allow users to connect external peripherals, and network connectivity is achieved via the dual Gigabit Ethernet ports, allowing your stored data to be shared with users throughout the network. For those who require RAID support, the DS423 supports RAID 0, 1, 5, 6, and 10, as well Synology Hybrid RAID and Basic RAID, each of which offers performance, data redundancy, or a combination of both. For those who do not require a RAID, JBOD is also available, allowing each drive bay to be individually utilized. It is also engineered to be energy efficient and offers one 80mm fan to help keep the system running cool at all times.

The Synology DiskStation DS423 4-Bay NAS Enclosure operates on 100-240 VAC at 50/60 Hz and includes an accessory pack, an AC power adapter, a power cord, and two RJ45 LAN cables. It is protected by a limited 2-year warranty.

Spacious Storage Server for Data Availability
Organize data scattered across devices. Your Synology NAS can serve as a go-to platform to securely and conveniently store any type of data with comprehensive and intuitive access and management tools.
  • Browse and manage your files and media from any browser with Synology Drive, or access data through your default file browser using common network protocols
  • Enable QuickConnect to access your NAS directly from the anywhere without configuring complex port forwarding rules
  • Keep your shots and clips organized using smart sorting functions in Synology Photos
  • Deploy your Synology NAS as edge storage and fit it easily into the existing infrastructure thanks to Windows AD and LDAP integration
Collaboration and Synchronization Platform
Easily share documents and digital memories with family and friends, and boost productivity while working in a team or with your clients.
  • Build a private data cloud for easy file management and sharing across all platforms, and keep data in sync between two or more Synology systems with Synology Drive
  • Maintain a reduced local footprint by streaming data on demand from a central data repository through the cloud with Hybrid Share
  • Synchronize data to and from popular cloud storage platforms with Synology Cloud Sync
  • Share media with family, friends, or collaborators through the privacy-focused sharing options in Synology Photos
Flexible Data Protection Options
Synology DSM comes with a host of backup and data protection solutions available at no extra cost.
  • Leverage Synology Drive to protect data from ransomware attacks or accidental deletion with real-time or scheduled backup of your PC folders
  • Safeguard photos and videos taken on mobile devices by automatically creating remote copies with Synology Drive or Synology Photos
  • Efficiently back up your entire Synology NAS or select folders to multiple destinations using Hyper Backup
  • Store backups off-site on C2 Storage, a dedicated and secure cloud destination powered by Synology C2
  • Take NAS protection to the next level with Snapshot Replication by creating point-in-time copies of shared folders that can be replicated to other Synology systems and rapidly restored
Versatile and Private Video Surveillance
Synology Surveillance Station transforms your Synology system into a powerful network video recorder (NVR).
  • 8300+ supported camera models
  • ONVIF support for a broader selection of cameras
  • Private, subscription-free storage of recordings
  • Access through web browsers, desktop clients, or mobile apps
  • Event-based rules to trigger specific actions
  • Email, SMS, and push notification options
  • Dual recording to the cloud with C2 Surveillance for online access and convenient sharing
UPC: 846504004911

Synology DS423 External HDD/SSD Specs

Key Specs
RAID
Yes: Supported RAID Modes: 0 / 1 / 5 / 6 / 10 / Basic / Hybrid
Number of Bays
4x 2.5"/3.5" SATA (Unspecified Version)
Inputs/Outputs
2x USB-A 3.0 / 3.1/3.2 Gen 1
2x RJ45 Gigabit Ethernet
Computing
CPU
Quad-Core
Processor
Realtek RTD1619B
GPU
Mali G57
Memory
2 GB DDR4
RAM Configuration / Capacity
Onboard Only/Not Upgradeable
Drives
RAID
Yes: Supported RAID Modes: 0 / 1 / 5 / 6 / 10 / Basic / Hybrid
General
Number of Bays
4x 2.5"/3.5" SATA (Unspecified Version)
Inputs/Outputs
2x USB-A 3.0 / 3.1/3.2 Gen 1
2x RJ45 Gigabit Ethernet
Media Card Slots
No
PCI Expansion
No
Networking
Link Aggregation and Failover Support
No
iSCSI Support
No
Software
Installed Operating System
No
Mobile App Compatible
Yes: Android & iOS
Security
Encryption
No
Security Features
No
Electrical
Input Power
100 to 240 VAC, 50 / 60 Hz
Physical
Operating Conditions
32 to 104°F / 0 to 40°C at 8 to 80% Humidity
Storage Conditions
-5 to 140°F / -20 to 60°C at 8 to 80% Humidity
Cooling
1x 80 mm Fan
Dimensions
9.1 x 7.2 x 6.6" / 230 x 184 x 168 mm
Weight
4.9 lb / 2.2 kg
Packaging Info
Package Weight
8.13 lb
Box Dimensions (LxWxH)
11.4 x 9.6 x 9.3"

Synology DS423 External HDD/SSD Reviews

Lots of features for the price

By Michael
Rated 5 out of 5
Date: 2026-02-06

Needed to update my NAS hardware due to advancement in technology/security (SMB1) and Synology DS423 provides plenty of performance now and lots of room for growth. This is just for home use, so it's not overly burdened by multiple users, which is why this unit is more than adequate and cost friendly. The Synology software suite, available online at no extra charge, covers all my needs and then some. B&H is a great source with competitive pricing, fast free shipping, and experts to answer your questions.

Nice replacement for my ds410

By Dave
Rated 5 out of 5
Date: 2025-05-30

My ds410 died and I was concerned I would lose all my data. I swapped my drives into the ds423 and everything was saved including users, folders passwords.... the works. I'm very happy with this nas. It does all that I need.

See any errors on this page?

can I use 16 or 32 GB of RAM instead of 2GB it ...

can I use 16 or 32 GB of RAM instead of 2GB it comes with?
Asked by: Kamal
The RAM on the Synology DiskStation DS423 4-Bay NAS Enclosure is not upgradeable.
Answered by: Alex D
Date published: 2025-02-06

Is the DS423 Expandable, in other words can ...

Is the DS423 Expandable, in other words can Synology expansion units be added?
Asked by: Heiko
The Synology DiskStation DS423 4-Bay NAS Enclosure, B&H # SYDS423, does not support expansion units.
Answered by: Miguel M
Date published: 2026-01-27

Will this allow me to grant family or whatever ...

Will this allow me to grant family or whatever access to a specific folder based on a link I provide them to it using my dns?
Asked by: Jeremy
Yes the Synology DiskStation DS423 4-Bay NAS Enclosure does allow it's owner to share/manage privileges of it's folders and files with other people.
Answered by: Paige K
Date published: 2024-05-12

What is the maximum capacity supported by this ...

What is the maximum capacity supported by this NAS? Is there a storage ceiling for the drives that are supported. Thanks in adva
Asked by: Nishith D.
The Synology DiskStation DS423 4-Bay NAS Enclosure, B&H # SYDS423, can support up to 80TB of raw capacity when using four of the Synology 20TB HAT5310 SATA III 3.5" Internal Enterprise HDD, B&H # SYHAT531020T. For third-party drives, the maximum raw capacity is 64TB; you could install up to four of the Seagate 16TB IronWolf Pro 7200 rpm SATA III 3.5" Internal NAS HDD (CMR), B&H # SEST16000NT1.
Answered by: Miguel M
Date published: 2025-01-20

Does the fan run continuously or does it only ...

Does the fan run continuously or does it only turn on when the unit gets too warm?
Asked by: Hal
The Synology DiskStation DS423 4-Bay NAS Enclosure BH #SYDS423 will continuously have the fan on. The velocity of the fan can change depending on the temperature of the NAS.
Answered by: Luis F
Date published: 2024-05-20

Does this Synology Model run Cloudstation Server?

Does this Synology Model run Cloudstation Server?
Asked by: Steve
The Synology DiskStation DS423 4-Bay NAS Enclosure BH #SYDS423 uses Synology Drive Server, the successor to Cloudstation Server.
Answered by: Reuben K
Date published: 2024-05-12

What is the best drives to use?

What is the best drives to use?
Asked by: ZenZo
Seagate IronWolf drives are highly recommended for use with the Synology DiskStation DS423 4-Bay NAS Enclosure.
Answered by: Michael S
Date published: 2024-10-29

Hello, I would like to know if this Synology ...

Hello, I would like to know if this Synology model is compatible with the MailPlus service?
Asked by: Ricardo
No, the Synology DiskStation DS423 4-Bay NAS Enclosure is not compatible with the MailPlus service. In order to use MailPlus, you need the Synology DiskStation DS423+ 4-Bay NAS Enclosure, B&H # SYDS423P.
Answered by: Kenneth C
Date published: 2024-05-12
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