Synology DiskStation DS223j NAS Server Alternatives: 6 Similar Picks Compared
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If you are looking for synology diskstation ds223j NAS server alternatives, you likely want to compare options based on specific hardware requirements. The original DS223j offers a quad-core CPU, 1GB of RAM, and fast 2.5-inch SSD storage in a compact, energy-efficient white chassis. It excels at providing reliable data protection through Btrfs and snapshot technology for users who prioritize speed and reliability over raw network throughput. However, you might need more drive bays, higher RAM capacity, or different network connectivity speeds for your specific workflow.
This list of 6 alternatives was chosen because their published specifications overlap significantly with the original model. You will find options ranging from basic 2-bay units with pre-installed HDDs to high-density 8-bay systems with 4GB of RAM. Some picks include faster 5GbE ports or support for larger 3.5-inch drives to increase storage volume. By comparing these specs, you can identify the device that best matches your need for capacity, expansion, or processing power without sacrificing the core reliability you expect from a dedicated NAS solution.
Our top pick: Synology DS223j 2-Bay SSD NAS.
How each alternative compares
QNAP TS-673-4G 8-Bay NAS
The QNAP TS-673-4G expands your storage capacity significantly with an 8-bay design, compared to the DS223j’s two-bay limit. It includes 4GB of RAM, which is double the original’s 1GB, allowing for more concurrent virtual machines and Docker containers. While it retains 1GbE connectivity, the larger chassis measures 11 inches deep and weighs 12.3 pounds, making it less compact than the DS223j. You should choose this model if you need maximum drive density and expansion options for a high-density media server, rather than the DS223j’s focus on compact, fast SSD storage.
Synology 2-Bay 8TB NAS
This Synology bundle upgrades the RAM to 2GB, doubling the memory available for multitasking compared to the original’s 1GB. It includes 8TB of storage using Seagate IronWolf drives, which differs from the original’s 2.5-inch SSD configuration. The drives are 3.5-inch mechanical units, offering higher capacity but lower speed than the SSDs in the base DS223j. The chassis is slightly smaller at 9.17 inches long. This option suits users who want a simple, pre-configured 2-bay system for basic file sharing and backup tasks without the need for SSD performance.
Synology 2-Bay NAS with 8TB Storage
This model also provides 8TB of storage but omits the explicit RAM specification found in the data for the original or the 2GB variant. It uses 3.5-inch Seagate IronWolf drives, prioritizing capacity over the read/write speeds of the original’s 2.5-inch SSDs. The physical dimensions are compact at 8.86 inches long, similar in footprint to the original. It retains the quad-core processor and 1GbE network port. You should pick this version if you prioritize storage volume and ease of use for light home file storage, accepting the trade-off of slower mechanical drive speeds.
Synology DS223j 2-Bay 3.5 inch NAS
This variant offers substantial 24TB capacity using two 12TB 3.5-inch hard drives, a massive increase over the original’s 2TB SSD setup. It maintains the same white chassis dimensions and quad-core processor as the base DS223j. The trade-off is the use of mechanical hard drives, which are slower and louder than the SSDs in the original model. Network connectivity remains at 1GbE. This choice fits users who prioritize storage volume and power efficiency over network speed or the fast access times provided by solid-state storage in the original DS223j.
Synology DiskStation 8TB 2-Bay NAS
The DS225+ model upgrades network connectivity to 5GbE, offering five times the bandwidth of the original’s 1GbE port. It includes an Intel Celeron J4125 quad-core processor and 8TB of storage. The chassis is black and measures 11.8 inches long, differing from the original’s white, 12-inch deep design. This model delivers strong performance for users needing fast network transfers. You should choose this alternative if network speed is critical for your workflow, as it provides significantly higher throughput than the standard 1GbE connection found in the original DS223j.
Synology 6-Bay 2.5 Inch NAS DS620slim
The DS620slim increases the number of bays to six, all supporting 2.5-inch drives, compared to the original’s two-bay limit. It includes 2GB of DDR3L RAM, which is double the original’s memory. The form factor is extremely compact, measuring only 6.89 inches long, making it ideal for high-density storage in small spaces. It does not include drives, requiring you to purchase them separately. This model is best for users who need high storage density in a compact footprint, rather than the original’s focus on pre-installed SSD speed and capacity.
Quick picks
Our 7 picks
Synology DS223j 2-Bay SSD NAS
Best for: Compact, fast SSD storage with data protection
- Drive Bays
- 2-Bay
- Network Connectivity
- 1GbE
- Processor
- RTD1619B 4-Core 1.7GHz
- RAM Capacity
- 1GB DDR4
- Included Storage
- 2TB
- Form Factor
- 2.5 Inch
View on Amazon: Synology DS223j 2-Bay SSD NAS Affiliate link
The Synology DS223j NAS Server features a Realtek RTD1619B quad-core 1.7GHz CPU and 1GB of DDR4 memory. This unit includes two 1TB 2.5-inch SSDs for a total of 2TB storage. It uses a Btrfs file system with snapshot technology for data protection. The device connects via a single 1GbE port. It offers efficient operation with low energy consumption. This setup suits users needing fast, reliable storage in a compact form.
Pros
- Includes 2TB (2 x 1TB) 2.5-inch SSDs for high-speed storage
- Realtek RTD1619B quad-core 1.7GHz processor for efficient operation
- Btrfs file system with snapshot technology for data protection
- Low energy consumption at 17.3 W during operation
Cons
- Single 1GbE network port limits bandwidth compared to multi-gigabit alternatives
- 1GB memory is modest for heavy multitasking or virtualization
- Requires separate installation of included drives
Good fit if
- You need fast SSD storage in a small 2-bay chassis
- You want reliable data protection with snapshot technology
- You prioritize low power consumption for always-on storage
Skip if
- You require high-speed network connectivity beyond 1GbE
- You need more than 2TB of pre-installed storage
- You plan to run resource-intensive virtual machines
Verdict: Synology DS223j 2TB SSD NAS provides fast SSD storage and strong data protection in a compact, energy-efficient package. It fits users who value reliability and speed over raw network throughput or expansion capacity.
QNAP TS-673-4G 8-Bay NAS
Best for: high-density storage and expansion
- Drive Bays
- 6 Bay
- Network Connectivity
- 4x GbE LAN
- RAM Capacity
- 4GB DDR4
- M.2 NVMe Slots
- 2 slots
- Number of Bays
- 8-Bay
- Processor Cores
- Quad-Core
View on Amazon: QNAP TS-673-4G 8-Bay NAS Affiliate link
The QNAP TS-673-4G is an 8-bay NAS built for high-density storage. It uses an AMD R-Series quad-core processor at 2.1GHz and includes 4GB of DDR4 RAM. You get four 1GbE ports and two PCIe slots for expansion. Dual M.2 slots support SSD caching. This unit suits users needing extensive drive capacity and hardware acceleration for media tasks.
Pros
- Eight drive bays for large storage arrays
- AMD quad-core CPU with 4GB RAM
- Dual M.2 slots for SSD caching
- Supports NVIDIA GT1030 for 4K transcoding
- Four 1GbE LAN ports
Cons
- Limited to 1GbE network speeds
- No included hard drives
- Bulky 12.3-pound chassis
Good fit if
- You need space for eight drives
- You want hardware transcoding for video
- You require PCIe expansion slots
Skip if
- You need 10GbE connectivity built-in
- You prefer a compact desktop unit
- You want pre-installed drives
Verdict: The QNAP TS-673-4G 8-Bay NAS fits users who need maximum drive capacity and expansion options. It is ideal for those building a high-density storage server with media transcoding capabilities.
Synology 2-Bay 8TB NAS
Best for: Basic 2-bay storage with 8TB included
- Drive Bays
- 2-Bay
- Network Connectivity
- 1 x RJ-45 1GbE
- Processor
- Realtek RTD1619B
- RAM Capacity
- 2 GB DDR4
- Included Storage
- 8TB
- Processor Cores
- Quad-Core
View on Amazon: Synology 2-Bay 8TB NAS Affiliate link
This Synology DS223j bundle includes 8TB of storage in a compact 2-bay chassis. It features a Realtek RTD1619B quad-core processor running at 1.7 GHz and 2 GB of DDR4 RAM. You get one 1GbE LAN port and three USB 3.2 ports for peripheral connections. The hot-swap drive bays allow for easy maintenance. This setup is ideal for users needing reliable, entry-level data storage with included capacity.
Pros
- Includes 8TB of pre-installed storage
- Realtek RTD1619B quad-core 1.7 GHz processor
- 2 GB DDR4 non-ECC system RAM
- Three USB 3.2 Gen 1 ports
Cons
- Only one 1GbE LAN port
- 2 GB RAM is lower than higher-end models
- No mention of dual LAN or 10GbE support
Good fit if
- You need a ready-to-use NAS with 8TB of storage
- You are setting up a basic home or small office server
- You want hot-swap drive bays for easy drive replacement
Skip if
- You require 10GbE network connectivity
- You need more than two drive bays
- You want expandable RAM beyond 2 GB
Verdict: Synology DS223j 8TB NAS Bundle offers a complete storage solution with a quad-core CPU and 2 GB of RAM. It fits users who want a simple, pre-configured 2-bay system for basic file sharing and backup tasks.
Synology 2-Bay NAS with 8TB Storage
Best for: basic home file storage and backup
- Drive Bays
- 2-Bay
- Network Connectivity
- 1x 1GbE
- Processor
- Realtek RTD1619B
- RAM Capacity
- 1GB DDR4
- Included Storage
- 8TB
- Processor Cores
- Quad-Core
View on Amazon: Synology 2-Bay NAS with 8TB Storage Affiliate link
This Synology DS223j bundle offers 8TB of storage in a compact 2-bay chassis. It uses a Realtek RTD1619B quad-core processor running at 1.7 GHz and includes 1GB of DDR4 RAM. You get a single 1GbE LAN port for network connectivity. The package includes two 4TB Seagate IronWolf drives. This setup suits users who need reliable, entry-level file storage without high performance demands.
Pros
- Includes 8TB of pre-installed storage
- Realtek RTD1619B quad-core processor
- Compact 2-bay design
- 1GB DDR4 system memory
Cons
- Only 1GB of RAM limits multitasking
- Single 1GbE network port restricts speed
- Lower clock speed than premium models
Good fit if
- You need a simple, affordable storage solution
- You are storing documents and media files
- You want a pre-configured bundle
Skip if
- You require high-speed network transfers
- You need to run multiple heavy applications
- You want to expand network bandwidth
Verdict: Synology DS223j 8TB 2-Bay NAS provides essential storage for light users. It fits those who prioritize capacity and ease of use over processing power or network speed.
Synology DS223j 2-Bay 3.5 inch NAS
Best for: High-capacity 3.5-inch storage needs
- Drive Bays
- 2-Bay
- Network Connectivity
- 1GbE
- Processor
- RTD1619B 4-Core 1.7GHz
- RAM Capacity
- 1GB DDR4
- Included Storage
- 24TB
- Form Factor
- 3.5 Inch
View on Amazon: Synology DS223j 2-Bay 3.5 inch NAS Affiliate link
The Synology DS223j is a 2-bay NAS built for high-capacity storage using 3.5-inch drives. It features a 1.7GHz quad-core CPU and 1GB of RAM. This unit includes 24TB of space across two 12TB drives. It connects via a single 1GbE port. The system uses Btrfs for data protection. It suits users needing large local storage with efficient power use.
Pros
- Includes 24TB storage (2 x 12TB 3.5-inch HDDs)
- RTD1619B 4-core 1.7GHz processor
- Low energy consumption at 17.3W
- Btrfs file system with snapshot technology
Cons
- Only one 1GbE network port
- Single 1GB DDR4 non-ECC memory
- Requires separate installation of drives
Good fit if
- You need 24TB of local storage
- You prefer 3.5-inch drive capacity
- You want low power consumption
Skip if
- You require 10GbE networking
- You need more than 2 drive bays
- You want pre-installed drives
Verdict: Synology DS223j 24TB 3.5-inch NAS offers substantial 24TB capacity in a power-efficient package. It fits users who prioritize storage volume over network speed or multi-bay expansion.
Synology DiskStation 8TB 2-Bay NAS
Best for: Users needing 5 GbE speed and 8 TB storage
- Drive Bays
- 2-Bay
- Processor
- Intel Celeron J4125 Quad-Core
- RAM Capacity
- 2 GB Non-ECC DDR4 SODIMM
- Included Storage
- 8TB
- RAID Support
- Synology Hybrid RAID (SHR)
- Network Connectivity
- 5GbE, 1GbE
View on Amazon: Synology DiskStation 8TB 2-Bay NAS Affiliate link
This Synology DS225+ NAS features an Intel Celeron J4125 quad-core processor and 2 GB of DDR4 RAM. It includes 8 TB of storage and offers 5 GbE networking alongside standard 1 GbE ports. The system supports Synology Hybrid RAID and Btrfs file systems with snapshot technology. It is a solid choice for users needing faster network speeds and reliable data protection in a compact 2-bay form factor.
Pros
- Intel Celeron J4125 quad-core processor
- 5 GbE and 1 GbE network ports
- 8 TB included storage capacity
- Expandable RAM up to 6 GB
- Btrfs file system with snapshot technology
Cons
- Only two drive bays limit expansion
- RAM is non-ECC DDR4
- No mention of third-party drive compatibility in specs
Good fit if
- You need 5 GbE network speeds
- You want a 2-bay NAS with 8 TB storage
- You prefer Intel processors for performance
Skip if
- You require more than two drive bays
- You need ECC memory for critical data
- You want a NAS without pre-installed storage
Verdict: Synology DS225+ 8TB NAS delivers strong performance with its Intel Celeron J4125 and 5 GbE connectivity, making it ideal for users who need fast network transfers and ample built-in storage.
Synology 6-Bay 2.5 Inch NAS DS620slim
Best for: high-density 2.5-inch drive storage
- Drive Bays
- 6 Bay
- RAM Capacity
- 2GB DDR3L
- Included Storage
- Diskless
- Form Factor
- 2.5 Inch
- Dimensions
- 6.89 × 5.94 × 4.76 inches
- Weight
- 3.09 pounds
View on Amazon: Synology 6-Bay 2.5 Inch NAS DS620slim Affiliate link
The Synology DS620slim is a 6-bay NAS designed for 2.5-inch drives. It features a 2GB DDR3L memory module, expandable to 6GB, and supports dual-channel H.265/H.264 4K video transcoding. The Advanced Btrfs file system allows for extensive snapshot management. This compact unit suits users needing high drive density in a small footprint without purchasing drives separately.
Pros
- Six bays for 2.5-inch HDDs and SSDs
- Expandable memory up to 6GB
- Dual-channel 4K video transcoding support
- Advanced Btrfs file system with snapshot capabilities
Cons
- No internal hard drives included
- Only 2GB base memory
- Limited to 2.5-inch drive form factor
Good fit if
- You need maximum drive capacity in a small space
- You prefer using 2.5-inch SSDs or HDDs
- You require extensive data snapshot features
Skip if
- You need pre-installed drives
- You require 3.5-inch drive bays
- You need more than 6GB of RAM
Verdict: Synology DS620slim 6-Bay 2.5" NAS is ideal for users who need high storage density in a compact form factor and are willing to purchase drives separately.
Specifications side by side
| Spec | Synology DS223j 2-Bay SSD NAS | QNAP TS-673-4G 8-Bay NAS | Synology 2-Bay 8TB NAS | Synology 2-Bay NAS with 8TB Storage | Synology DS223j 2-Bay 3.5 inch NAS | Synology DiskStation 8TB 2-Bay NAS | Synology 6-Bay 2.5 Inch NAS DS620slim |
|---|---|---|---|---|---|---|---|
| Drive Bays | 2-Bay | 6 Bay | 2-Bay | 2-Bay | 2-Bay | 2-Bay | 6 Bay |
| Network Connectivity | 1GbE | 4x GbE LAN | 1 x RJ-45 1GbE | 1x 1GbE | 1GbE | not stated | not stated |
| Processor | RTD1619B 4-Core 1.7GHz | not stated | Realtek RTD1619B | Realtek RTD1619B | RTD1619B 4-Core 1.7GHz | Intel Celeron J4125 Quad-Core | not stated |
| RAM Capacity | 1GB DDR4 | 4GB DDR4 | 2 GB DDR4 | 1GB DDR4 | 1GB DDR4 | 2 GB Non-ECC DDR4 SODIMM | 2GB DDR3L |
| M.2 NVMe Slots | not stated | 2 slots | not stated | not stated | not stated | not stated | not stated |
| Included Storage | 2TB | not stated | 8TB | 8TB | 24TB | 8TB | Diskless |
| RAID Support | not stated | not stated | not stated | not stated | not stated | Synology Hybrid RAID (SHR) | not stated |
| Form Factor | 2.5 Inch | not stated | not stated | not stated | 3.5 Inch | not stated | 2.5 Inch |
| Number of Bays | not stated | 8-Bay | 2-Bay | 2-Bay | not stated | 2-Bay | 6-Bay |
| Size | a) 2TB (2 x 1TB) 2.5" SSDs | 4GB RAM | 8TB | 8TB | d) 24TB (2 x 12TB) 3.5" HDD | 8TB | 6-bay; 2GB DDR3L |
| Processor Cores | Quad-Core | Quad-Core | Quad-Core | Quad-Core | Quad-Core | Quad-Core | not stated |
| Dimensions | 12 × 6 × 12 inches | 11 × 10.4 × 7.41 inches | 9.17 × 4.25 × 6.5 inches | 8.86 × 3.94 × 6.5 inches | 12 × 6 × 12 inches | 11.8 × 11 × 4.72 inches | 6.89 × 5.94 × 4.76 inches |
| Weight | not stated | 12.3 pounds | 6.68 pounds | 5.84 pounds | not stated | 4.41 pounds | 3.09 pounds |
| Color | White | Black | Seagate IronWolf | Seagate IronWolf | White | Black | white |
| Model | DS223j | TS-673-4G-US | not stated | not stated | DS223j | DS225+/8TB-IW | DS620slim |
Frequently asked questions
Which NAS is best for fast SSD storage?
The Synology DS223j 2-Bay SSD NAS is the top choice for speed and data protection. It uses two 1TB 2.5-inch SSDs for rapid access. The compact white chassis fits easily in small spaces. It prioritizes reliability and speed over raw network throughput or expansion capacity.
What is the best option for high-density storage?
The QNAP TS-673-4G 8-Bay NAS is ideal for maximum drive capacity. It features an 8-bay design for high-density storage and expansion. With 4GB of RAM and a quad-core processor, it handles media transcoding well. This black unit weighs 12.3 pounds and suits users needing extensive storage.
Is there a basic 2-bay NAS with included drives?
Yes, the Synology 2-Bay 8TB NAS Bundle offers a complete solution. It includes 8TB of storage with a quad-core CPU and 2GB of RAM. This white unit is designed for basic file sharing and backup tasks. It provides a simple, pre-configured system for users who want ease of use.
Which model is best for basic home file storage?
The Synology 2-Bay NAS with 8TB Storage is best for light users. It provides essential storage with 8TB of capacity. The quad-core CPU and 1GbE connectivity handle basic tasks efficiently. This compact white unit prioritizes capacity and ease of use over high processing power or advanced network speeds.
What is the best choice for high-capacity 3.5-inch drives?
The Synology DS223j 2-Bay 3.5 inch NAS supports substantial storage volume. It holds up to 24TB using two 12TB 3.5-inch HDDs. The white chassis is power-efficient and compact. This model fits users who prioritize storage capacity over multi-bay expansion or high network throughput speeds.
Which NAS offers 5 GbE connectivity?
The Synology DiskStation 8TB 2-Bay NAS features 5 GbE and 1GbE ports. It uses an Intel Celeron J4125 quad-core processor for strong performance. The black unit includes 8TB of built-in storage. It is ideal for users needing fast network transfers and ample space for their data files.
What is the best 6-bay NAS for 2.5-inch drives?
The Synology DS620slim 6-Bay 2.5 Inch NAS is best for high density. It holds six 2.5-inch drives in a compact white chassis. It includes 2GB of DDR3L RAM. This model is ideal for users needing significant storage density while purchasing drives separately for their specific capacity needs.