Synology 4-Bay Expandable Rackmount NAS Review (2026): A Spec-Based Look
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This synology 4 bay expandable rackmount NAS review focuses on the RS822+, a diskless unit built for expandability and throughput. It features four drive bays and four 1GbE ports. The listing highlights sequential read speeds over 2,103 MB/s. You can scale storage by adding one RX418 expansion unit for eight total drives. Network flexibility includes failover and load balancing options. This device targets users needing reliable, high-speed data handling in a rackmount form factor without pre-installed drives.
What stands out
- Over 2,103 MB/s sequential read throughput
- Expandable to eight drives via RX418
- Four 1GbE ports for network flexibility
- Optional SSD cache for IOPS boosts
Who it fits
Good fit for
This NAS suits small to medium businesses that need scalable storage in a rack. The four 1GbE ports help teams manage network traffic with failover options. Users who require high sequential read speeds for stable transfers will benefit from the specified throughput. The diskless design allows you to choose your own drives, offering cost control. If you need to grow storage later, the ability to add an expansion unit makes this a practical long-term investment.
Who should skip it
You should look elsewhere if you need immediate storage, as this unit is diskless. You must purchase drives separately, which adds to setup time and complexity. Users requiring 10GbE or 25GbE connectivity out of the box will find only 1GbE ports included. Expansion cards for higher speeds are optional, not standard. If you want a plug-and-play experience with pre-installed drives and high-speed networking, this model does not meet those immediate needs.
Verdict: The RS822+ offers high throughput and clear expansion paths for growing storage needs. Its diskless design requires extra planning but allows for customized drive selection.
RS822+ Key Specs Explained
Drive Bays: 4-Bay
This unit holds four drives in a single chassis. You start with a moderate amount of space for home or small office data. If you need more room later, the system supports expansion via an external unit. This design lets you grow your storage capacity without replacing the main server hardware or migrating data to a new device.
Included Storage: Diskless
The package does not include any hard drives. You must purchase drives separately. This gives you full control over capacity and drive type, such as choosing between standard HDDs for bulk storage or SSDs for speed. It also allows you to select specific models that fit your budget and performance requirements without paying for pre-installed hardware.
Network Connectivity: Four 1GbE ports
The device includes four Gigabit Ethernet ports. This setup allows for link aggregation to boost total bandwidth or network failover to maintain connectivity if one cable fails. It provides reliable standard networking speeds. If you require faster transfer rates for large files, you can add optional 10GbE or 25GbE expansion cards to the system.
Sequential Read/Write: Over 2,103/1,074 MB/s
The listing states these maximum throughput numbers. These speeds support stable transfers of large files like video archives or database backups. High sequential throughput reduces wait times when moving big data sets. You should compare this against your network limits and drive capabilities to understand real-world performance, as actual speeds depend on your specific hardware configuration.
Physical Build and Dimensions
The Synology RS822+ is a rackmount unit designed for standard server racks. According to the listing, it measures 17.2 inches in width, 10 inches in height, and 19.3 inches in length. These dimensions confirm it fits typical 19-inch rack spaces. The chassis weighs 18.7 pounds. This weight suggests a sturdy metal construction, which helps dampen vibration from the four internal drive bays.
The unit is sold diskless. This means the enclosure is empty when you receive it. You must purchase drives separately. The four bays are housed within a single chassis. This layout keeps your data centralized. It also simplifies cable management in a rack environment. The design prioritizes stability over compactness. You get a dedicated space for each drive.
Network connectivity relies on four 1GbE ports. These ports are integrated into the rear panel. They support network failover and load balancing. You can add optional 10/25GbE expansion cards later. This modular approach lets you upgrade bandwidth without replacing the entire unit. The finish is not specified in the data. The focus remains on structural integrity and expandability. You get a reliable platform for growing storage needs. The rackmount form factor ensures it sits securely in your IT infrastructure.
Setup and everyday use
Because the RS822+ ships diskless, your initial setup requires purchasing and installing four hard drives. You place these drives into the four available bays before connecting the unit to power and your network. The listing specifies four 1GbE ports for connectivity. This allows you to connect multiple network cables. You can configure these ports for load balancing or failover. This setup ensures stable connections during daily operations. If your network requires higher speeds, the data notes that optional 10/25GbE expansions are available. This flexibility supports growing bandwidth needs without replacing the main chassis. For everyday use, the system prioritizes data transfer stability. The listing cites sequential read and write throughput exceeding 2,103 MB/s and 1,074 MB/s respectively. These figures imply that moving large files between devices or to backup locations remains efficient. The unit does not include internal SSD caching by default. However, you can boost random IOPS performance by adding an optional SSD cache. This addition helps when handling many small files simultaneously. Storage capacity is not fixed. You can scale up to eight drives by connecting one Synology RX418 Expansion Unit. This feature lets you expand storage as your data grows. The physical dimensions confirm it fits standard racks. This design suits environments where space is organized vertically. Daily management relies on Synology’s software ecosystem. You access data through the network using the configured IP addresses. The hardware provides a stable foundation for your file storage and sharing tasks.
Before you buy this NAS
Since the Synology RS822+ ships diskless, you must purchase four hard drives separately. Ensure these drives are compatible with rackmount installations and fit the drive bays. You will also need to consider your network infrastructure. The unit includes four 1GbE ports, which support failover and load balancing. If you require higher throughput, check for optional 10/25GbE expansion cards. The listing notes you can scale storage by adding one RX418 Expansion Unit. Verify that your rack space can accommodate this additional hardware if needed. You should also plan for SSD cache if random IOPS performance is critical for your workflow. This setup requires more initial planning than pre-loaded units. It suits users who value expandability and specific network configurations over out-of-the-box simplicity. Keep your drive inventory organized to maintain system stability.
Check before you buy
- Buy four compatible hard drives before setup
- Check rack space for expansion unit
- Verify network switch compatibility for failover
- Plan for optional SSD cache needs
The product at a glance
Synology 4-Bay Expandable Rackmount NAS
Best for: Scalable rackmount storage with high throughput
- Drive Bays
- 4-Bay
- Network Connectivity
- 4 x 1GbE
- RAM Capacity
- 32GB
- Included Storage
- Diskless
- Dimensions
- 19.3 × 17.2 × 10 inches
- Weight
- 18.7 pounds
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The Synology RS822+ is a diskless 4-bay rackmount NAS designed for enterprise environments. It delivers over 2,103 MB/s sequential read speeds and supports four 1GbE ports for network failover. You can expand capacity by adding an RX418 unit for up to eight drives. This model suits users needing scalable storage and high throughput in a 19-inch rack format.
Pros
- Sequential read speeds over 2,103 MB/s
- Expandable to 8 drives with RX418 unit
- Four 1GbE ports for load balancing
- Supports optional SSD cache for IOPS
Cons
- Sold diskless with no included storage
- Limited to 1GbE ports without expansion cards
- Heavy at 18.7 pounds for rack mounting
Good fit if
- You need a scalable 4-bay rackmount solution
- You require high sequential transfer speeds
- You want to add SSD cache for performance
Skip if
- You need pre-installed drives
- You require built-in 10GbE networking
- You prefer a compact desktop form factor
Verdict: Synology RS822+ 4-Bay Rackmount NAS offers high throughput and expandability for rack-based deployments. It fits users who prioritize sequential speed and modular growth over immediate storage inclusion.
Specifications side by side
| Spec | Synology 4-Bay Expandable Rackmount NAS |
|---|---|
| Drive Bays | 4-Bay |
| Network Connectivity | 4 x 1GbE |
| RAM Capacity | 32GB |
| Included Storage | Diskless |
| Number of Bays | 4-Bay |
| Dimensions | 19.3 × 17.2 × 10 inches |
| Weight | 18.7 pounds |
| Size | RS822+ |
| Color | Not Available |
| Model | RS822+ |
Frequently asked questions
Is the Synology RS822+ sold with hard drives included?
No, the Synology RS822+ ships diskless. You must purchase four hard drives separately to populate the four available bays. This design allows you to choose drives that match your specific capacity and performance needs, rather than being locked into pre-installed storage options.
What are the physical dimensions of the RS822+ rackmount NAS?
The unit measures 17.2 inches in width, 10 inches in height, and 19.3 inches in length. These dimensions are designed to fit standard 19-inch server racks. The total weight is 18.7 pounds, which you should consider when planning your rack installation and support structure.
How much storage capacity does the NAS provide initially?
The device provides zero initial storage capacity because it is sold without drives. It features four drive bays, allowing you to install up to four hard drives. You start with a moderate amount of space once you install your chosen drives, and you can expand further later.
Can I expand the storage capacity of this NAS later?
Yes, the system supports expansion via an external unit. This modular design lets you grow your storage over time without replacing the main chassis. You can add more drives by connecting compatible expansion enclosures, making it suitable for users who anticipate increasing data needs.
What network connectivity options are available on the RS822+?
The listing specifies four 1GbE ports for connectivity. This provides multiple options for network integration and potential link aggregation. You can connect these ports to your switch or router to handle data traffic, supporting the high throughput capabilities highlighted for sequential read speeds.
What is the maximum sequential read speed for this model?
The listing highlights sequential read speeds over 2,103 MB/s. This high throughput is beneficial for users who prioritize speed in rack-based deployments. It suggests the unit is well-suited for handling large files or multiple simultaneous data streams efficiently within a server environment.