6 Best Alternatives to the Synology RackStation 12-Bay 216TB NAS (2026)
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The Synology RackStation RS2421RP+ delivers high-capacity storage with ECC memory and redundant power. You might look for synology rackstation rs2421rp NAS server alternatives if you need a smaller footprint or faster network speeds. This 12-bay unit holds 216TB of data and uses a Ryzen V1500B processor. It is built for heavy server roles like backup and virtualization. However, the 1GbE ports limit throughput for some users. The large chassis also requires significant rack space. You may prefer a 1U model for branch offices or a budget option with SSD caching.
The alternatives in this guide share key specifications with the original model. Each option includes 32GB of RAM and AMD Ryzen processors. This ensures comparable processing power for your applications. We selected these models because their specs overlap with the RS2421RP+ in critical areas. You can choose a variant with different storage capacities or form factors. Some options offer pre-installed drives, while others require manual assembly. This list helps you find the right balance between capacity, speed, and physical size for your specific needs.
Our top pick: Synology RackStation 12-Bay 216TB NAS.
Comparing NAS Alternatives to Synology
Synology DS723+ 2-Bay Ryzen NAS
The Synology DS723+ replaces the 12-bay chassis with a compact 2-bay design. It retains the 32GB of RAM and AMD Ryzen processor found in the original, ensuring strong processing power. However, it lacks the massive 216TB storage capacity and redundant power supplies. This unit supports M.2 NVMe SSDs for caching, which improves performance for smaller datasets. You should choose this alternative if you need a smaller footprint and faster SSD caching speeds rather than high-density bulk storage. It is ideal for users who prioritize performance per bay over raw total capacity.
Synology 1U 4-Bay Rackmount NAS with 48TB
The Synology RS822+ 4-Bay Edge NAS offers a significantly smaller form factor than the 12-bay RackStation. It includes 32GB of RAM and an AMD Ryzen processor, matching the computational strength of the original. However, it provides only 48TB of pre-installed storage instead of 216TB. This unit is designed for small business edge storage and surveillance applications. You should pick this alternative if you need a compact solution for consolidated backup and surveillance features. It suits teams that value a smaller physical footprint and pre-installed storage over the ability to expand to massive drive counts.
Synology 1U 4-Bay Rackmount NAS with 32GB RAM
The Synology RackStation RS822+ Edge NAS focuses on compact branch office edge storage. Like the original, it features 32GB of RAM and an AMD Ryzen processor. It differs by offering fast SSD storage in a 1.75-inch size, prioritizing edge computing performance over high-density drive capacity. You should choose this alternative if you need a small form factor with ample RAM for specific edge tasks. It is best for users who prioritize speed and compactness over the ability to house numerous mechanical drives. This unit sacrifices the 12-bay expansion capability for a more agile, space-saving design.
Synology RackStation 12-Bay 48TB NAS
The Synology RackStation RS2421RP+ 48TB variant shares the same 12-bay chassis and redundant power supply as the 216TB model. It uses the same AMD Ryzen processor and 32GB of RAM. The primary difference is the reduced storage capacity, offering 48TB instead of 216TB. This makes it a lighter, potentially more cost-effective option for those who do not need the maximum possible storage. You should pick this alternative if you need a robust, pre-configured solution with redundant power but do not require the full 216TB capacity. It fits users who prioritize data integrity and a reliable 12-bay server without filling every bay.
Synology RackStation 12TB SSD NAS
The Synology RackStation RS2421RP+ 12TB SSD NAS uses the same 12-bay chassis and redundant power supplies as the original. It retains the 32GB RAM and AMD Ryzen processor. However, it utilizes 12TB of SSD storage instead of 216TB of HDDs. This provides much faster access speeds but significantly less total capacity. You should choose this alternative if you need fast SSD storage and redundant power without the hassle of installing mechanical drives. It is ideal for users who prioritize speed and pre-installed configuration over raw storage volume. Note that it lacks 10GbE connectivity, matching the original's 1GbE ports.
Synology 12-Bay Rackmount NAS with 24TB Storage
The Synology RackStation RS2421RP+ 24TB 12-Bay NAS shares the same chassis, redundant power, 32GB RAM, and AMD Ryzen processor as the original. It offers 24TB of pre-installed storage, which is much less than the 216TB model. This unit is designed for users who need a reliable 12-bay server with strong processing power but do not require maximum capacity. You should pick this alternative if you prioritize data protection and expandable capacity over having the drives pre-installed at maximum density. It fits teams that want a robust server but prefer to install their own drives later.
Quick picks
Our 7 picks
Synology RackStation 12-Bay 216TB NAS
Best for: high-capacity storage with ECC memory
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen V1500B
- RAM Capacity
- 32GB DDR4 ECC SODIMM
- Included Storage
- 216TB
View on Amazon: Synology RackStation 12-Bay 216TB NAS Affiliate link
This Synology RackStation RS2421RP+ NAS server delivers high-capacity storage with 216TB of pre-installed 18TB drives. It features a Ryzen V1500B 4-core processor and 32GB of DDR4 ECC memory. The unit includes four 1GbE LAN ports and redundant power supplies for reliability. You will need to install the drives yourself. This system suits users needing robust file storage and server roles.
Pros
- Includes 216TB of SATA 3.5" HDD storage
- Powered by Ryzen V1500B 4-Core 2.2GHz CPU
- Equipped with 32GB DDR4 ECC SODIMM memory
- Features redundant power supplies for protection
- Four RJ-45 1GbE LAN ports with failover support
Cons
- Network ports are limited to 1GbE speeds
- Hard drives and memory are not pre-installed
- Requires manual installation of components
Good fit if
- You require 216TB of high-capacity storage
- You need ECC memory for data integrity
- You want redundant power supplies for uptime
Skip if
- You need 10GbE or faster network connectivity
- You want a plug-and-play pre-assembled unit
- You prefer faster than 1GbE network ports
Verdict: Synology RS2421RP+ 216TB NAS provides substantial storage and ECC memory for users who value redundancy and capacity over speed. It fits those ready to handle the installation of drives and memory modules.
Synology DS723+ 2-Bay Ryzen NAS
Best for: Users needing high RAM and SSD caching
- Drive Bays
- 2-Bay
- Network Connectivity
- 2 x 1GbE
- Processor
- Ryzen R1600 2.6GHz
- RAM Capacity
- 32GB DDR4 ECC
- M.2 NVMe Slots
- 1TB M.2 NVMe SSD
- Included Storage
- 20TB HDD + 1TB SSD
View on Amazon: Synology DS723+ 2-Bay Ryzen NAS Affiliate link
The Synology DS723+ offers a Ryzen 2.6GHz CPU and 32GB of DDR4 ECC memory. It includes 20TB of SATA HDD storage and 1TB of M.2 NVMe SSD cache. Two 1GbE ports support link aggregation. This setup suits users needing high-capacity storage and fast caching for multimedia or file syncing tasks in a compact form factor.
Pros
- Ryzen R1600 2-Core 2.6GHz CPU with up to 3.1GHz Turbo
- 32GB DDR4 ECC SODIMM Memory for robust multitasking
- 20TB SATA HDD storage included
- 1TB M.2 NVMe SSD for caching
- Dual 1GbE LAN ports with link aggregation support
Cons
- Limited to 1GbE network connectivity
- Only two drive bays for expansion
- Requires manual installation of drives and memory
Good fit if
- You need high RAM capacity for virtual machines or heavy multitasking
- You want fast SSD caching for improved read/write speeds
- You prefer a compact NAS for home or small office use
Skip if
- You require 10GbE or higher network speeds
- You need more than two drive bays for large storage arrays
- You want a pre-assembled unit with drives and memory installed
Verdict: Synology DS723+ NAS with 32GB RAM provides strong processing power and ample memory for users prioritizing performance and caching speed over high-density storage expansion.
Synology 1U 4-Bay Rackmount NAS with 48TB
Best for: small business edge storage and surveillance
- Drive Bays
- 4-bay
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen R1500B 4-Core 2.2GHz
- RAM Capacity
- 32GB DDR4 ECC UDIMM
- Included Storage
- 48TB
View on Amazon: Synology 1U 4-Bay Rackmount NAS with 48TB Affiliate link
The Synology RS822+ is a compact 1U 4-bay NAS designed for branch offices and small businesses. It features a Ryzen R1500B 4-core 2.2GHz CPU and 32GB of DDR4 ECC memory. The unit includes 48TB of storage across four 12TB drives and offers four 1GbE LAN ports. This all-in-one edge storage solution supports DSM, Hyper Backup, and Surveillance Station for data protection and management.
Pros
- Includes 48TB of pre-installed SATA 3.5" HDD storage
- Generous 32GB DDR4 ECC UDIMM memory capacity
- Four 1GbE LAN ports for network connectivity
- Compact 1U form factor suitable for edge locations
Cons
- Only 4 drive bays limit expansion compared to 12-bay models
- 1GbE ports lack the speed of 2.5GbE or 10GbE options
- Pre-installed drives may not match your preferred capacity or type
Good fit if
- You need a compact storage solution for a branch office
- You require high RAM capacity for virtualization or heavy multitasking
- You want an all-in-one unit with surveillance capabilities
Skip if
- You need more than 4 drive bays for large-scale storage
- You require 10GbE or higher network speeds
- You are looking for a 12-bay enterprise rackmount server
Verdict: The Synology RS822+ 4-Bay Edge NAS is a practical choice for small businesses needing robust memory and pre-installed storage in a small footprint. It suits teams that value consolidated backup and surveillance features over raw expansion capacity.
Synology 1U 4-Bay Rackmount NAS with 32GB RAM
Best for: compact branch office edge storage
- Drive Bays
- 4-bay
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen R1500B
- RAM Capacity
- 32GB DDR4 ECC SODIMM
- Included Storage
- 8TB
View on Amazon: Synology 1U 4-Bay Rackmount NAS with 32GB RAM Affiliate link
The Synology RackStation RS822+ is a compact 1U edge storage solution designed for branch offices. It features a Ryzen R1500B 4-core 2.2GHz CPU and 32GB of DDR4 ECC SODIMM memory. The unit includes 8TB of SATA 2.5-inch SSD storage across four bays. It connects via four 1GbE LAN ports. This server suits small to medium businesses needing fast, reliable data management and backup capabilities.
Pros
- Includes 32GB DDR4 ECC SODIMM memory
- Powered by a Ryzen R1500B 4-core 2.2GHz CPU
- Comes with 8TB (4 x 2TB) SATA 2.5-inch SSDs
- Features four 1GbE LAN ports for connectivity
Cons
- Only supports 1GbE network speeds
- Limited to a 4-bay capacity
- Requires separate installation of drives and memory
Good fit if
- You need a compact 1U edge storage solution
- You require 32GB of ECC memory for stability
- You want pre-installed SSD storage for speed
Skip if
- You need 10GbE or higher network speeds
- You require more than four drive bays
- You prefer a larger 2U rackmount chassis
Verdict: The Synology RackStation RS822+ Edge NAS is a practical choice for small businesses needing fast SSD storage and ample RAM in a compact form factor. It fits teams that prioritize edge computing performance over high-density drive capacity.
Synology RackStation 12-Bay 48TB NAS
Best for: High-capacity storage with redundant power
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen V1500B
- RAM Capacity
- 32GB DDR4 ECC SODIMM
- Included Storage
- 48TB
View on Amazon: Synology RackStation 12-Bay 48TB NAS Affiliate link
This Synology RackStation RS2421RP+ is a 24U high-performance server designed for roles like backup, file storage, and domain control. It features a Ryzen V1500B 4-Core 2.2GHz CPU and 32GB DDR4 ECC SODIMM memory. The unit includes 48TB of SATA 3.5" HDD storage and four 1GbE LAN ports. It supports link aggregation and redundant power supplies. This setup suits users needing robust, expandable infrastructure with advanced management tools.
Pros
- Ryzen V1500B 4-Core 2.2GHz processor for high performance
- 32GB DDR4 ECC SODIMM memory for stability
- 48TB storage capacity with 12 x 4TB HDDs
- Four 1GbE LAN ports with link aggregation support
- Redundant power supplies for extra protection
Cons
- Limited to 1GbE network connectivity
- Requires manual installation of drives and memory
- Large 24U chassis size
Good fit if
- You need high-capacity storage with 48TB included
- You require redundant power supplies for reliability
- You want a server with ECC memory for data integrity
Skip if
- You need 10GbE or faster network speeds
- You want a pre-assembled unit with drives installed
- You have limited rack space for a 24U device
Verdict: Synology RS2421RP+ 24U 48TB NAS is a solid choice for users who prioritize data integrity and capacity over raw network speed. It fits those who need a robust, pre-configured storage solution with redundant power.
Synology RackStation 12TB SSD NAS
Best for: Users needing fast SSDs and redundant power
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen V1500B
- RAM Capacity
- 32GB DDR4 ECC SODIMM
- Included Storage
- 12TB
View on Amazon: Synology RackStation 12TB SSD NAS Affiliate link
This Synology RackStation RS2421RP+ offers 12TB of SATA 2.5-inch SSD storage paired with a Ryzen V1500B 4-core processor and 32GB of DDR4 ECC memory. It includes four 1GbE LAN ports and redundant power supplies for reliability. You should consider this unit if you need fast, pre-loaded SSD storage and robust server capabilities for roles like backup or virtualization without installing drives yourself.
Pros
- Includes 12TB of SATA 2.5-inch SSDs for fast storage
- Powered by a Ryzen V1500B 4-core 2.2GHz CPU
- Equipped with 32GB DDR4 ECC SODIMM memory
- Features redundant power supplies for high availability
Cons
- Limited to 1GbE network connectivity
- Requires installation of hard drives and memory upgrades
- Lacks 10GbE network ports found in higher-end models
Good fit if
- You want pre-installed SSDs to save setup time
- You need redundant power for critical server roles
- You require ECC memory for data integrity
Skip if
- You need 10GbE or higher network speeds
- You want a completely plug-and-play unit with no assembly
- You require more than 12TB of total storage
Verdict: Synology RS2421RP+ 12TB SSD NAS suits users who need fast SSD storage and redundant power without the hassle of installing drives, though it lacks the 10GbE connectivity of other options.
Synology 12-Bay Rackmount NAS with 24TB Storage
Best for: redundant power and high-capacity storage
- Network Connectivity
- 4 x 1GbE
- Processor
- Ryzen V1500B
- RAM Capacity
- 32GB DDR4 ECC SODIMM
- Included Storage
- 24TB
View on Amazon: Synology 12-Bay Rackmount NAS with 24TB Storage Affiliate link
The Synology RS2421RP+ is a 12-bay rackmount server designed for high-performance roles like backup and file storage. It features a Ryzen V1500B 4-core 2.2GHz processor and 32GB of DDR4 ECC memory. The unit includes 24TB of pre-installed SATA HDDs and four 1GbE LAN ports. Its redundant power supplies add protection for critical data. This model suits users needing robust, expandable storage in a sealed, ready-to-install chassis.
Pros
- Ryzen V1500B 4-core 2.2GHz processor
- 32GB DDR4 ECC SODIMM memory
- 24TB (12 x 2TB) pre-installed SATA HDDs
- Redundant power supplies for extra protection
- Four 1GbE LAN ports with link aggregation support
Cons
- Limited to 1GbE network connectivity
- Requires manual installation of drives and memory
- Large 24U rackmount chassis size
Good fit if
- You need high-capacity storage with 24TB of pre-installed drives
- You require redundant power supplies for server reliability
- You want a 12-bay chassis for extensive drive expansion
Skip if
- You need faster than 1GbE network speeds
- You prefer a pre-assembled unit with drives already installed
- You require a compact desktop form factor instead of rackmount
Verdict: Synology RS2421RP+ 24TB 12-Bay NAS offers strong processing power and ample pre-installed storage for users who need a reliable, redundant 12-bay server. It fits teams prioritizing data protection and expandable capacity over high-speed networking.
Specifications side by side
| Spec | Synology RackStation 12-Bay 216TB NAS | Synology DS723+ 2-Bay Ryzen NAS | Synology 1U 4-Bay Rackmount NAS with 48TB | Synology 1U 4-Bay Rackmount NAS with 32GB RAM | Synology RackStation 12-Bay 48TB NAS | Synology RackStation 12TB SSD NAS | Synology 12-Bay Rackmount NAS with 24TB Storage |
|---|---|---|---|---|---|---|---|
| Drive Bays | not stated | 2-Bay | 4-bay | 4-bay | not stated | not stated | not stated |
| Network Connectivity | 4 x 1GbE | 2 x 1GbE | 4 x 1GbE | 4 x 1GbE | 4 x 1GbE | 4 x 1GbE | 4 x 1GbE |
| Processor | Ryzen V1500B | Ryzen R1600 2.6GHz | Ryzen R1500B 4-Core 2.2GHz | Ryzen R1500B | Ryzen V1500B | Ryzen V1500B | Ryzen V1500B |
| RAM Capacity | 32GB DDR4 ECC SODIMM | 32GB DDR4 ECC | 32GB DDR4 ECC UDIMM | 32GB DDR4 ECC SODIMM | 32GB DDR4 ECC SODIMM | 32GB DDR4 ECC SODIMM | 32GB DDR4 ECC SODIMM |
| M.2 NVMe Slots | not stated | 1TB M.2 NVMe SSD | not stated | not stated | not stated | not stated | not stated |
| Included Storage | 216TB | 20TB HDD + 1TB SSD | 48TB | 8TB | 48TB | 12TB | 24TB |
| Hardware Interface | not stated | M.2 NVMe | not stated | not stated | not stated | not stated | not stated |
| Color | Black | Black | Black | not stated | not stated | Black | Black |
| Model | RS2421RP+ | not stated | not stated | not stated | RS2421RP+ | RS2421RP+ | RS2421RP+ |
| Size | not stated | not stated | not stated | 1.75 inches | 24U | not stated | 24U x 24" x 36" |
If you prefer building your own rack unit, you can evaluate feikteey server motherboard alternatives for compatible hardware expansion.
Frequently asked questions
Is the Synology DS723+ a good alternative for home use?
Yes, the Synology DS723+ serves as a strong budget alternative for users who do not need 12-bay density. It features a compact 2-bay design and retains the 32GB of RAM and AMD Ryzen processor found in larger rackmount units. This configuration provides ample processing power and supports SSD caching via M.2 NVMe slots, making it ideal for performance-focused home or small office setups.
Which Synology NAS offers the best pre-installed storage capacity?
The Synology RackStation 12-Bay 216TB NAS offers the highest pre-installed capacity among the listed options. It is designed for users who prioritize substantial data storage and ECC memory over raw network speed. This model fits teams ready to handle drive installation and memory module upgrades while requiring a robust solution for high-capacity redundancy and data integrity.
Can I use these NAS drives for surveillance and backup?
Yes, several models are suited for surveillance and consolidated backup. The Synology 1U 4-Bay Rackmount NAS with 48TB is a practical choice for small businesses needing robust memory and pre-installed storage in a small footprint. It specifically suits teams that value consolidated backup and surveillance features over raw expansion capacity, providing a reliable edge storage solution.
Do these alternatives support 10GbE network connectivity?
The listed alternatives primarily utilize 1GbE network connectivity. While some options like the Synology RackStation 12TB SSD NAS lack 10GbE connectivity, they compensate with fast SSD storage and redundant power. If you require faster network speeds, you may need to look beyond these specific models or add network interface cards, as the base specifications highlight 1GbE as the standard connection.
Which model is best for compact branch office storage?
The Synology RackStation RS822+ Edge NAS is the best choice for compact branch office environments. It offers fast SSD storage and 32GB of RAM in a compact 1.75-inch size. This model fits teams that prioritize edge computing performance and a small physical footprint over high-density drive capacity, ensuring efficient data processing at remote locations without consuming excessive rack space.
Is redundant power included in these NAS server alternatives?
Yes, redundant power is a key feature in the 12-bay RackStation models. The Synology RackStation 12-Bay 48TB NAS and the 12-Bay Rackmount NAS with 24TB Storage both offer redundant power supplies. This feature ensures data integrity and continuous operation in case of power supply failure, making these models suitable for users who prioritize reliability and data protection over other factors.
How much RAM do these Synology NAS units have?
All listed Synology NAS alternatives come equipped with 32GB of RAM. This consistent memory capacity ensures strong processing power across different form factors, from the 2-bay DS723+ to the 12-bay RackStation units. The ample memory supports demanding tasks such as virtualization, database management, and heavy file sharing, allowing you to run multiple services simultaneously without performance bottlenecks.
What processor is used in these NAS servers?
Every listed Synology NAS model utilizes an AMD Ryzen processor. This choice provides consistent and strong processing power across the entire lineup, whether you select the compact 2-bay unit or the high-capacity 12-bay rackmount server. The AMD Ryzen architecture ensures efficient handling of data-intensive tasks, making these units suitable for various professional and enthusiast applications requiring reliable computational performance.