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Compact white rectangular two-bay NAS unit with front drive bays

Synology Inc.

Synology Inc. DS223J 2-Bay Desktop NAS 1GB DDR4 Diskless

SKU CH-WGAM-KEVV1 MPN DS223J

A two-bay desktop NAS with 1 GB DDR4 memory and 1 GbE connectivity for personal cloud storage and file sharing

  • TypeDesktop NAS
  • Ports1 x 1GbE / 2 x USB 3.2 Gen 1
  • HDD Interface2 x SATA (2 x Bay)
  • Form Factor2-Bay
  • ProcessorRealtek RTD1619B
  • Installed Memory1GB DDR4

Form Factor 2-Bay

Option DS223J

  • Diskless design lets you choose two 3.5" SATA drives up to 24TB total
  • Realtek RTD1619B processor delivers up to 736/796 MB/s sequential read/write throughput
  • 1GB DDR4 memory and 1GbE port keep file operations quick and efficient
  • 31 W active power and 4 W hibernation run quietly and energy efficiently
  • Btrfs file system support enables snapshots and comprehensive data protection

Two-bay desktop NAS for personal cloud

The Synology DS223J is a diskless 2-bay desktop NAS built around a Realtek RTD1619B processor with 1 GB of DDR4 memory. It provides a single 1 GbE port and two USB 3.2 Gen 1 ports for external storage or printer sharing. The unit accepts two 3.5-inch SATA hard drives or 2.5-inch SATA SSDs using an optional holder and supports a maximum raw capacity of 24 TB.

Home users and small teams needing simple file

This NAS suits households or small offices that want a private cloud for backups, media streaming and document collaboration without administering a full server. Btrfs file-system support adds snapshot protection for shared folders. Buyers who require faster than gigabit networking, hardware transcoding for multiple 4K streams, or expandable memory should look at higher-specification models.

1 GbE network interface limits peak throughput

The only network connection is a single 1 Gigabit Ethernet port, so sustained read and write speeds over the network cannot exceed the throughput of that link. Sequential disk performance reaches up to 736 MB/s read and 796 MB/s write internally, but all remote access is constrained by the 1 GbE bottleneck.

Highlights

  • Diskless design lets you choose two 3.5" SATA drives up to 24TB total
  • Realtek RTD1619B processor delivers up to 736/796 MB/s sequential read/write throughput
  • 1GB DDR4 memory and 1GbE port keep file operations quick and efficient
  • 31 W active power and 4 W hibernation run quietly and energy efficiently
  • Btrfs file system support enables snapshots and comprehensive data protection

Specifications

BrandSynology
ModelDS223J
TypeDesktop NAS
Ports1 x 1GbE / 2 x USB 3.2 Gen 1
HDD Interface2 x SATA (2 x Bay)
Form Factor2-Bay
ProcessorRealtek RTD1619B
Installed Memory1GB DDR4
Included HDD CapacityDiskless System
Max Capacity24TB
Drive Compatibility3.5" SATA HDD
2.5" SATA SSD (with optional 2.5" Disk Holder)
Power100-240 VAC 50/60Hz
Power Consumption16.31 W (Access)
4 W (HDD Hibernation)
TemperatureOperating Temperature: 0°C to 40°C (32°F to 104°F)
Storage Temperature: -20°C to 60°C (-5°F to 140°F)
Humidity5% to 95% RH
FeaturesDependable Performance
Up to 736/796 MB/s sequential read/write throughput makes file operations quick and efficient
Versatile Network Storage
Leverage built-in file and photo management, data protection, virtualization, and surveillance solutions
Fast and Stable Connectivity
Four 1GbE ports for simple integration into existing environments with optional 10GbE connectivity2 to tackle more specialized, bandwidth-heavy applications
Easy Capacity Expansion
Add up to 10 extra drive bays with 2 DX517 expansion units for a maximum of 15 storage drives
UsageBackup & stream media through personal cloud
Dimensions6.5" x 3.94" x 9.14"
Weight1.94 lbs.
Package Contents1 x Main Unit
1 x Accessory Pack
1 x AC Power Adapter
1 x AC Power Cord
1 x RJ-45 LAN Cable
1 x Quick Installation Guide
Shipping weight1.81 kg
Package size292 × 273 × 121 mm

Other versions of this model

3 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the DS223J's single 1GbE port bottleneck file transfers when I connect it to my older 100 Mbps router?

The 1GbE port will run at the router's 100 Mbps limit, so large copies will be slower than the NAS's 736/796 MB/s internal throughput.

How can I confirm the Realtek RTD1619B processor and 1GB DDR4 memory are recognised after first boot?

Open DSM's Info Center; the Model line will show DS223J and the Memory line will show 1GB DDR4.

Which items ship in the box and which drives or accessories must be purchased separately?

The box contains the main unit, accessory pack, AC adapter, power cord, RJ-45 LAN cable and quick guide; 3.5" SATA HDDs or 2.5" SATA SSDs are not included and must be bought separately.

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