Looking Beyond the Synology 4-Bay 1U Rackmount NAS? 6 Alternatives Worth a Look
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The Synology RackStation RS826+ is a 4-Bay 1U Rackmount NAS designed for office file sharing and backup. It delivers over 2,000 MB/s sequential read speeds and offers upgradeable networking via PCIe slots. If you are looking for synology rackstation rs826 4 bay 1u alternatives, you may need different specifications or form factors. Some users prefer integrated 10GbE ports over expansion cards. Others might need a simpler desktop chassis or a dedicated expansion unit for existing storage.
This list covers 6 options that share core traits with the RS826+. Each alternative is a 4-Bay device in a 1U rackmount form factor, or a compatible expansion unit. We selected these products because their published specs overlap with your original choice. You will find units with dual 10GbE ports, M.2 NVMe support, or SATA JBOD capabilities. These options provide distinct networking and storage features while maintaining the rackmount efficiency you require.
Our top pick: Synology 4-Bay 1U Rackmount NAS.
How each alternative compares
QNAP 4-Bay 10GbE Rackmount NAS
The QNAP TS-432PXU-RP offers dual 10GbE ports as standard, whereas the Synology RS826+ relies on a PCIe slot for optional 10GbE upgrades. This QNAP unit provides immediate high-speed networking without extra adapters. It maintains the 4-bay 1U rackmount form factor, fitting your server rack just like the Synology. You get essential high-speed connectivity in a small footprint. However, it may offer less base memory capacity than the Synology model. Choose this if you prioritize out-of-the-box 10GbE ports over flexible PCIe expansion options.
QNAP TR-004U 4 Bay Rackmount NAS
The QNAP TR-004U is not a standalone NAS but a 4-bay rackmount expansion unit. It lacks the processing power and networking ports of the Synology RS826+. Instead, it connects to an existing QNAP NAS to add raw storage capacity. It measures 16.5 inches wide and weighs 4.41 pounds. This unit is for users who already have a QNAP system and need more disk space. It does not replace the Synology if you need a complete server. It is a practical add-on for expanding capacity in a secure, rackmountable chassis.
QNAP 4 Bay 1U Rackmount SATA JBOD
The QNAP TL-R400S is a 4-bay 1U JBOD enclosure, not a full NAS. It provides SATA connectivity for raw storage expansion but lacks the file management features of the Synology RS826+. It measures 16.3 inches wide and 7.05 inches high. This unit is for users who already own a NAS and need more drive bays. It prioritizes capacity over integrated data management. You cannot use it as a standalone server. It is a budget-friendly option for adding storage to an existing setup, unlike the all-in-one Synology solution.
Asustor Lockerstor 4-Bay Quad-Core NAS
The Asustor AS6604T is a desktop NAS, not a 1U rackmount unit. It measures 6.69 inches wide, fitting on a desk rather than in a server rack. It includes dual 2.5GbE ports and M.2 NVMe slots for caching. The Synology RS826+ offers rackmount efficiency and optional 10GbE upgrades. The Asustor lacks 10GbE speed found in some competitors. It suits desktop users needing NVMe caching over rackmount form factors. You get solid specs for desktop storage but sacrifice the space efficiency and networking flexibility of the Synology rackmount model.
QNAP 4-Bay 10GbE SFP+ NAS
The QNAP TS-431X3 is a desktop 4-bay NAS with dual 10GbE SFP+ ports and 2.5GbE connectivity. It is not a 1U rackmount unit, measuring 10 inches in each dimension. It offers flexible connectivity options for storage infrastructure. The Synology RS826+ provides a compact 1U rackmount form factor with PCIe expansion. The QNAP prioritizes network speed over raw processing power. It fits users needing high-speed networking in a desktop chassis. You gain immediate 10GbE access but lose the rackmount space efficiency and upgradeable PCIe slots of the Synology model.
Synology 4-Bay Compact Rackmount NAS
The Synology RS422+ is a 4-bay 1U rackmount NAS, sharing the same form factor as the RS826+. It measures 15.8 inches wide and 5.45 inches high, offering space efficiency. It is an expandable server but prioritizes compact design over out-of-the-box speed. The RS826+ delivers over 2,000 MB/s read speeds and includes a PCIe slot for upgrades. The RS422+ offers network flexibility but may lack the high throughput of the RS826+. Choose this if you need a smaller 1U footprint. It is a compact alternative for space-constrained setups.
Quick picks
Our 7 picks
Synology 4-Bay 1U Rackmount NAS
Best for: Office file sharing with upgradeable networking
- Drive Bays
- 4-Bay
- Network Connectivity
- Four built-in 1GbE RJ-45 ports
- Included Storage
- Diskless
- Form Factor
- Rackmount
- Weight
- 19 pounds
View on Amazon: Synology 4-Bay 1U Rackmount NAS Affiliate link
The Synology RackStation RS826+ is a 1U rackmount NAS with four drive bays. It offers over 2,000 MB/s sequential read speeds. You get four 1GbE ports and a PCIe 3.0 slot for upgrades. You can expand to eight bays with an RX426 unit. This server suits offices needing reliable file sharing and backup.
Pros
- Sequential read speeds exceed 2,000 MB/s
- Four built-in 1GbE RJ-45 ports
- PCIe 3.0 slot for 10GbE or NVMe upgrades
- Expandable to 8 bays via RX426
Cons
- Diskless design requires separate drive purchase
- Base ports limited to 1GbE speeds
- Physical footprint is 7.09 inches tall
Good fit if
- You need high throughput for office file sharing
- You plan to upgrade network speeds later
- You require a compact 1U rackmount form factor
Skip if
- You want pre-installed storage drives
- You need 10GbE connectivity out of the box
- You prefer a desktop tower over rackmount
Verdict: Synology RackStation RS826+ 4-Bay 1U NAS delivers strong performance for offices. You should choose it if you need upgradeable networking and expandable storage in a rackmount chassis.
QNAP 4-Bay 10GbE Rackmount NAS
Best for: 1U rackmount setups needing 10GbE
- Drive Bays
- 4 Bay
- Network Connectivity
- Two 10GbE, Two 2.5GbE
- Processor
- AnnapurnaLabs Alpine AL324
- RAM Capacity
- 2GB UDIMM DDR4
- Form Factor
- Rackmount
View on Amazon: QNAP 4-Bay 10GbE Rackmount NAS Affiliate link
The QNAP TS-432PXU-RP-2G is a 4-bay rackmount NAS built for speed. It features a 1.7GHz quad-core processor and two 10GbE SFP+ ports alongside two 2.5 GbE RJ45 connections. You get 2GB of DDR4 RAM, expandable to 16GB. This unit suits users who need high network throughput and a compact 1U form factor for their server room.
Pros
- Dual 10GbE SFP+ network ports
- Two 2.5 GbE RJ45 ports
- 1.7GHz quad-core ARM processor
- Expandable 2GB DDR4 RAM
Cons
- Only 2GB base RAM
- Single power supply option
- PCIe Gen 2 x2 slot
Good fit if
- You need 10GbE connectivity
- You require a 1U rackmount size
- You want a 4-bay capacity
Skip if
- You need dual power supplies
- You require more than 4 bays
- You need 32GB RAM base
Verdict: QNAP 4-Bay Rackmount NAS with Dual 10GbE delivers essential high-speed networking in a small footprint. It fits users who prioritize 10GbE ports and rackmount efficiency over base memory capacity.
QNAP TR-004U 4 Bay Rackmount NAS
Best for: expanding QNAP NAS storage capacity
- Drive Bays
- 4 Bay
- Network Connectivity
- USB 3.0 Type-C
- Form Factor
- Rackmount
- Dimensions
- 21.3 × 16.5 × 7.87 inches
- Weight
- 4.41 pounds
View on Amazon: QNAP TR-004U 4 Bay Rackmount NAS Affiliate link
The QNAP TR-004U is a 4-bay rackmount expansion unit designed to add storage to an existing QNAP NAS. It supports up to four SATA drives and features a USB 3.0 Type-C port for faster data transfer. You can configure RAID groups using dip switches for hardware control or manage them via software on a QNAP NAS. The lockable hard drive trays help prevent accidental drive removal.
Pros
- Supports up to four SATA drives for reliable read and write performance
- USB 3.0 Type-C port for faster data transfer
- Lockable hard drive trays to prevent accidental drive removal
- Dip switch allows configuration between hardware and software RAID control
Cons
- Requires a host QNAP NAS for full feature access and management
- No built-in network ports for independent operation
- Lacks a dedicated display for local status monitoring
Good fit if
- You already own a QNAP NAS and need more storage space
- You want to add a hardware-based RAID storage device to your setup
- You need a rackmount expansion unit with lockable drive trays
Skip if
- You need a standalone NAS that operates without a host server
- You require direct network connectivity for independent file sharing
- You are looking for a complete NAS solution with built-in processing power
Verdict: The QNAP TR-004U 4-Bay Rackmount Expansion is a practical storage add-on for QNAP NAS owners who need to expand their capacity with a secure, rackmountable unit.
QNAP 4 Bay 1U Rackmount SATA JBOD
Best for: expanding storage for existing QNAP NAS
- Drive Bays
- 4-Bay
- Included Storage
- Diskless
- Form Factor
- Rackmount
- Hardware Interface
- SATA
- Dimensions
- 21.3 × 16.3 × 7.05 inches
View on Amazon: QNAP 4 Bay 1U Rackmount SATA JBOD Affiliate link
The QNAP TL-R400S is a 4-bay 1U rackmount SATA 6Gbps JBOD storage enclosure. It expands storage for QNAP NAS, Windows, and Linux systems. The unit includes a QXP-400eS-A1164 PCIe SATA card and an SFF-8088 cable. It measures 16.3 inches wide, 7.05 inches high, and 21.3 inches long. You need this if you require additional disk space without NAS features.
Pros
- 4 x 3.5-inch SATA 6Gb/s bays
- Includes QXP-400eS-A1164 PCIe SATA card
- Compact 1U rackmount form factor
- Supports Windows and Linux expansion
Cons
- Diskless design requires separate drives
- JBOD mode lacks RAID redundancy
- No internal NAS operating system
Good fit if
- You need extra SATA storage for a QNAP NAS
- You require a 1U rackmount expansion unit
- You want simple JBOD storage pooling
Skip if
- You need a complete NAS with OS
- You require built-in RAID protection
- You prefer a tower form factor
Verdict: The QNAP TL-R400S 4-Bay 1U JBOD Enclosure is a practical expansion unit for users who already have a NAS and need more raw SATA storage in a rackmount chassis. It fits those who prioritize capacity over integrated data management.
Asustor Lockerstor 4-Bay Quad-Core NAS
Best for: Desktop users needing NVMe caching
- Drive Bays
- 4-Bay
- Network Connectivity
- 2x 2.5GbE
- Processor
- Quad-Core 2.0GHz
- RAM Capacity
- 4GB DDR4
- M.2 NVMe Slots
- 2 slots
- Included Storage
- Diskless
View on Amazon: Asustor Lockerstor 4-Bay Quad-Core NAS Affiliate link
The Asustor AS6604T is a 4-bay NAS with a 2.0GHz quad-core CPU and 4GB DDR4 RAM. It includes two 2.5GbE ports and two M.2 NVMe slots for caching. This diskless unit suits users needing flexible storage expansion and decent processing power for home or small business tasks.
Pros
- Quad-core 2.0GHz processor handles multitasking
- Two M.2 NVMe slots for SSD caching
- Dual 2.5GbE network ports
- Includes 4GB DDR4 RAM
Cons
- No 10GbE port for high-speed networking
- Diskless design requires separate drive purchase
- Larger physical footprint than short-depth rack units
Good fit if
- You need M.2 NVMe caching for performance
- You want dual 2.5GbE connectivity
- You prefer a 4-bay desktop form factor
Skip if
- You require 10GbE network speeds
- You need a short-depth rackmount unit
- You want included storage drives
Verdict: Asustor AS6604T 4-Bay NAS fits users who prioritize NVMe caching and dual 2.5GbE ports over rackmount form factors. It offers solid specs for desktop storage but lacks the 10GbE speed found in some competitors.
QNAP 4-Bay 10GbE SFP+ NAS
Best for: Users needing 10GbE connectivity
- Drive Bays
- 4-Bay
- Network Connectivity
- 1x 10GbE, 1x 2.5GbE, 1x 1GbE
- Processor
- AnnapurnaLabs AL-314
- RAM Capacity
- 4GB DDR3L
- Included Storage
- Diskless
- Dimensions
- 10 × 10 × 10 inches
View on Amazon: QNAP 4-Bay 10GbE SFP+ NAS Affiliate link
The QNAP TS-431X3 is a 4-bay diskless NAS featuring an AnnapurnaLabs AL-314 quad-core processor. It includes 4GB of DDR3L RAM. Network options include a 10GbE SFP+ port, a 2.5GbE port, and a 1GbE port. This setup suits users needing high-speed data transfer for multiple devices. It fits well in environments where fast local network connectivity is essential.
Pros
- Includes a dedicated 10GbE SFP+ port for high-speed networking
- Features a 2.5GbE port for faster connections than standard Gigabit
- Powered by an AnnapurnaLabs AL-314 quad-core 1.7GHz processor
- Provides three USB 3.2 Gen 1 ports for peripheral expansion
Cons
- Only 4GB of RAM, which is lower than some competitors
- Lacks a 2.5GbE port on the base model variant
- No internal display for local status monitoring
Good fit if
- You need a 10GbE connection for fast data transfers
- You require multiple network speeds for different devices
- You are building a high-performance storage server
Skip if
- You need more than 4 drive bays
- You require more than 4GB of RAM
- You want a pre-installed storage solution
Verdict: The QNAP TS-431X3 4-Bay NAS with 10GbE is a practical choice for users who prioritize network speed over raw processing power. It fits those who need flexible connectivity options for their storage infrastructure.
Synology 4-Bay Compact Rackmount NAS
Best for: Space-constrained 1U rackmount setups
- Drive Bays
- 4-Bay
- Network Connectivity
- Dual 1GbE
- Included Storage
- Diskless
- Form Factor
- Rackmount
- Dimensions
- 21 × 15.8 × 5.45 inches
View on Amazon: Synology 4-Bay Compact Rackmount NAS Affiliate link
The Synology RS422+ is a 4-bay rackmount NAS designed for space-constrained environments. It offers a compact depth of 327.5 mm with handles installed. Dual 1GbE ports provide network failover and load balancing. Sequential read and write speeds reach over 601/516 MB/s. You can expand connectivity using plug-and-play network upgrade modules for 10GbE RJ-45 ports. This diskless unit suits users needing a reliable, expandable 1U server.
Pros
- Compact 327.5 mm depth with handles installed
- Dual 1GbE ports for failover and load balancing
- Supports 10GbE expansion via upgrade modules
- Over 601/516 MB/s sequential read/write throughput
Cons
- Limited to dual 1GbE ports by default
- Diskless design requires separate drive purchase
- No mention of included RAM or CPU specs
Good fit if
- You need a space-saving 1U rackmount solution
- You require network redundancy with dual 1GbE ports
- You plan to upgrade to 10GbE connectivity later
Skip if
- You require built-in 10GbE networking
- You want a pre-loaded storage solution
- You need a desktop form factor instead
Verdict: Synology RS422+ 4-Bay 1U Rackmount NAS is a compact, expandable server for users prioritizing space efficiency and network flexibility over out-of-the-box speed.
Specifications side by side
| Spec | Synology 4-Bay 1U Rackmount NAS | QNAP 4-Bay 10GbE Rackmount NAS | QNAP TR-004U 4 Bay Rackmount NAS | QNAP 4 Bay 1U Rackmount SATA JBOD | Asustor Lockerstor 4-Bay Quad-Core NAS | QNAP 4-Bay 10GbE SFP+ NAS | Synology 4-Bay Compact Rackmount NAS |
|---|---|---|---|---|---|---|---|
| Drive Bays | 4-Bay | 4 Bay | 4 Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay |
| Network Connectivity | Four built-in 1GbE RJ-45 ports | Two 10GbE, Two 2.5GbE | USB 3.0 Type-C | not stated | 2x 2.5GbE | 1x 10GbE, 1x 2.5GbE, 1x 1GbE | Dual 1GbE |
| Processor | not stated | AnnapurnaLabs Alpine AL324 | not stated | not stated | Quad-Core 2.0GHz | AnnapurnaLabs AL-314 | not stated |
| RAM Capacity | not stated | 2GB UDIMM DDR4 | not stated | not stated | 4GB DDR4 | 4GB DDR3L | not stated |
| M.2 NVMe Slots | not stated | not stated | not stated | not stated | 2 slots | not stated | not stated |
| Included Storage | Diskless | not stated | not stated | Diskless | Diskless | Diskless | Diskless |
| Form Factor | Rackmount | Rackmount | Rackmount | Rackmount | not stated | not stated | Rackmount |
| Hardware Interface | not stated | not stated | not stated | SATA | M.2 NVMe | not stated | not stated |
| Number of Bays | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay | 4-Bay |
| Processor Cores | not stated | not stated | not stated | not stated | Quad-Core | not stated | not stated |
| Weight | 19 pounds | not stated | 4.41 pounds | not stated | 6.53 pounds | 5.1 pounds | not stated |
| Dimensions | not stated | not stated | 21.3 × 16.5 × 7.87 inches | 21.3 × 16.3 × 7.05 inches | 9.06 × 6.69 × 7.3 inches | 10 × 10 × 10 inches | 21 × 15.8 × 5.45 inches |
| Size | 22.44x21.26x7.09 in | 4 Bay | 4 Bay | 4 Bay | 4 Bay | 2.5GbE and 10GbE Ports | RS422+ |
| Color | Black | Black | Black | black | AS6604T | black | Black |
| Model | RS826+ | TS-432PXU-RP-2G-AM-US | TR-004U | TL-R400S | AS6604T | TS-431X3 | RS422+ |
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Frequently asked questions
Which 1U rackmount NAS offers dual 10GbE ports without extra adapters?
The QNAP TS-432PXU-RP-2G-AM-US provides dual 10GbE ports as standard hardware. This setup delivers immediate high-speed networking for 1U rackmount environments. You get essential high-speed connectivity in a small footprint. The model fits users who prioritize network speed over base memory capacity. It maintains the 4-bay form factor for efficient rack integration.
Is there a rackmount expansion unit for existing QNAP NAS systems?
Yes, the QNAP TR-004U serves as a practical storage add-on for QNAP owners. It is a 4-bay rackmount expansion unit designed to increase capacity securely. The unit measures 16.5 inches wide and 7.87 inches high. It weighs 4.41 pounds. This device fits users needing to expand their current QNAP infrastructure without buying a new primary server.
What is the best budget 1U JBOD enclosure for SATA drives?
The QNAP TL-R400S is the recommended budget option for raw SATA storage expansion. It is a 4-bay 1U rackmount JBOD enclosure. The unit measures 16.3 inches wide and 7.05 inches high. It fits users who already have a NAS and need more drive slots. It prioritizes capacity over integrated data management features found in full NAS units.
Does the Asustor AS6604T support NVMe caching in a 4-bay design?
The Asustor AS6604T supports M.2 NVMe caching for improved performance. It is a 4-bay desktop NAS with a quad-core processor. The unit includes dual 2.5GbE ports for network connectivity. It measures 6.69 inches wide and 7.3 inches high. It fits users who prioritize NVMe caching and dual 2.5GbE ports over a 1U rackmount form factor.
Which NAS provides 10GbE SFP+ connectivity in a compact 4-bay chassis?
The QNAP TS-431X3 offers 10GbE SFP+ connectivity for flexible network setups. It is a 4-bay NAS with 2.5GbE and 10GbE ports. The unit measures 10 inches wide, 10 inches high, and 10 inches long. It weighs 5.1 pounds. It fits users who prioritize network speed and flexible connectivity options over raw processing power for their storage infrastructure.
Is there a compact Synology option for space-constrained 1U racks?
The Synology RS422+ is a compact 4-bay 1U rackmount NAS. It is designed for space-constrained setups that need expandability. The unit measures 15.8 inches wide and 5.45 inches high. It fits users prioritizing space efficiency and network flexibility. It offers an expandable server design for those needing rackmount capabilities without occupying excessive rack space.
Which alternative is best for office file sharing with upgradeable networking?
The Synology RS826+ remains the top choice for office file sharing. It delivers strong performance with upgradeable networking via PCIe slots. You should choose it if you need expandable storage in a 4-bay rackmount chassis. It offers over 2,000 MB/s sequential read speeds. This model fits users requiring both robust performance and the ability to upgrade network interfaces later.