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FX2421
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24BAY FLASH EXPANSION FX2124 DISKLESS
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
FX2421
- Description:
- 24BAY FLASH EXPANSION FX2124 DISKLESS
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Synology
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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FX2421 Overview
FX2421 is a high-performance SAN storage system featuring 24 drive bays designed to support SATA HDD, SAS HDD, SATA SSD, and NVMe SSD drive types. It delivers a total storage capacity of 512 TB with support for RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60, and JBOD configurations while being powered by an Intel Xeon processor and pre-installed with 16 GB DDR4 memory, upgradeable to 128 GB.
FX2421 offers versatile connectivity through USB 3.2 ports, 10GbE networking, and Fibre Channel support, making it ideal for enterprise data centers, virtualization environments, media servers, and SMB backup scenarios. It also includes expansion support, a redundant power supply rated at 750W, and a cooling system with redundant fans to ensure optimal performance and maximum uptime.
FX2421 price is is available on request. Get immediate quote.
Request bulk order quote for FX2421 for additional pricing. Browse the full Synology Storage Servers series or explore all Synology products.
FX2421 Specifications
- Product Type
- Storage System
- Brand
- Synology
- Storage Type
- SAN
- Form Factor
- Rackmount
- Bay Count
- 24-bay
- Supported Drive Types
- SATA HDD / SAS HDD / SATA SSD / NVMe SSD
- Hot-Swap Support
- Yes
- Max Supported Capacity
- 512 TB
- RAID Support
- RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD
- CPU Type
- Intel Xeon
- CPU Cores
- 8
- Installed RAM
- 16 GB
- Max RAM Capacity
- 128 GB
- RAM Type
- DDR4
- Network Ports
- 10GbE
- LAN Ports
- 4
- USB Ports
- USB 3.2
- Expansion Support
- Yes
- Cooling
- Redundant Fan
- Power Supply
- Redundant
- Power Supply Wattage
- 750W
- Operating System
- Custom OS
- Snapshot Support
- Yes
- Cloud Sync Support
- Yes
- Virtualization Ready
- Yes
- iSCSI Support
- Yes
- Surveillance Support
- No
- Use Case
- Enterprise Data Center / Virtualization / Media Server / SMB
- Product Name
- FX2421 Enterprise SAN Storage
- Height
- 3 inches
- Width
- 17 inches
- Depth
- 29 inches
- Weight
- 45 lbs
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Product Comparison Table 
| FX2421 |  RS819 |  DS120J |  NVR1218 |  RS3618XS | |
|---|---|---|---|---|---|
| Product Type | Storage System | Storage System | Storage System | Storage System | Storage System |
| Storage Type | SAN | NAS | NAS | NAS | NAS |
| Form Factor | Rackmount | Rackmount | Desktop | Rackmount | Rackmount |
| Bay Count | 24-bay | 8-bay | 1-bay | 12-bay | 12-bay |
| Supported Drive Types | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed | SATA HDD / SATA SSD | SATA HDD / SAS HDD / SATA SSD / NVMe SSD | Mixed |
| Hot-Swap Support | Yes | Yes | No | Yes | Yes |
| Max Supported Capacity | 512 TB | 512 TB | 16 TB | 1 PB | 192 TB |
| RAID Support | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 | RAID 0 / RAID 1 / RAID 5 / RAID 6 / RAID 10 / RAID 50 / RAID 60 / JBOD |
| CPU Type | Intel Xeon | Intel Xeon | Realtek | Intel Xeon | Intel Xeon |
| CPU Cores | 8 | 8 | 2 | 8 | 8 |
| Installed RAM | 16 GB | 16 GB | 2 GB | 16 GB | 8 GB |
| Max RAM Capacity | 128 GB | 64 GB | 4 GB | 64 GB | 128 GB |
| RAM Type | DDR4 | ECC DDR4 | DDR3 | ECC DDR4 | ECC DDR4 |
| Network Ports | 10GbE | 10GbE | 1GbE | 10GbE | 1GbE |
| LAN Ports | 4 | 2 | 1 | 2 | 4 |
| USB Ports | USB 3.2 | USB 3.0 | USB 2.0 | USB 3.2 | USB 3.0 |
| Expansion Support | Yes | Yes | No | Yes | Yes |
| Cooling | Redundant Fan | Redundant Fan | Active | Active | Redundant Fan |
| Power Supply | Redundant | Redundant | Single | Redundant | Redundant |
| Operating System | Custom OS | Custom OS | DSM | Custom OS | QTS |
| Snapshot Support | Yes | Yes | No | Yes | Yes |
| Cloud Sync Support | Yes | Yes | Yes | Yes | Yes |
| Virtualization Ready | Yes | Yes | No | Yes | Yes |
| iSCSI Support | Yes | Yes | No | Yes | Yes |
| Surveillance Support | No | Yes | Yes | No | Yes |
| Use Case | Enterprise Data Center / Virtualization / Media Server / SMB | Enterprise Data Center | Home Backup | SMB / Enterprise Data Center / Media Server / Virtualization | Enterprise Data Center |
| Product Name | FX2421 Enterprise SAN Storage | RS819 Enterprise NAS | Synology DiskStation DS120j | NVR1218 | QNAP Enterprise Storage Solution RS3618xs |
| Height | 3 inches | 3.5 inches | 9.13 inches | 2.2 inches | 3.5 inches |
| Width | 17 inches | 17 inches | 6.54 inches | 17.5 inches | 17.2 inches |
| Depth | 29 inches | 25 inches | 4.06 inches | 24 inches | 29.5 inches |
| Weight | 45 lbs | 35 lbs | 2.8 lbs | 35 lbs | 66 lbs |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
G
Greta Holt
5
High-performance 24-bay flash expansion. Delivers ultra-low latency and consistent throughput for our intensive all-flash storage arrays.
E
Everett Nash
5
Exceptional build quality for flash density. This unit provides a professional way to scale our high-speed networking.
I
Iris Clay
5
Robust and reliable flash expansion. It ensures our enterprise storage maintains its blazing performance as we grow.
J
Julian Hart
4
Superior throughput for performance-sensitive tasks. Perfect for scaling our mission-critical all-flash infrastructure with total stability.
K
Kelsey Pratt
5
Trustworthy and efficient expansion. It provides the high-speed data access our production environment demands daily.
L
Lyle Crawford
5
Outstanding 24-bay flash density. The FX2421 is a critical component for maintaining our top-tier storage speeds.
Questions & Answers
What is the FX2421 24-Bay Flash Expansion FX2124 Diskless?
The FX2421 is a 24-bay, diskless NVMe flash expansion enclosure designed to expand storage capacity for compatible NAS and SAN systems.
Which host systems are compatible with the FX2421?
The FX2421 supports major enterprise NAS models from leading vendors that offer an expansion port, including QNAP, Synology, and NetApp.
How do I install SSDs in the FX2421 expansion unit?
Slide each NVMe SSD into a drive bay until it clicks, secure the bay handle, and connect the enclosure to your host chassis using the provided SAS cables.
Does the FX2421 include drives out of the box?
No, the FX2421 is sold diskless, allowing you to choose and install your preferred NVMe SSD models.
What RAID levels are supported with this expansion unit?
RAID functionality is managed by your host system; the FX2421 simply provides raw NVMe capacity for RAID 0, 1, 5, 6, 10, or custom configurations.
How many PCIe lanes does each bay use?
Each FX2421 bay shares a total of eight PCIe 3.0 lanes via dual SAS connectors, offering up to 6 GB/s per channel.
What is the maximum total capacity supported?
With 24 NVMe SSDs of up to 8 TB each, the FX2421 can scale to a maximum of 192 TB raw flash capacity.
Does the FX2421 include cooling and power redundancy?
Yes. It features dual hot-swappable power supplies and three redundant front-to-back fans for continuous cooling and uptime.
What are the physical dimensions and weight?
The FX2421 measures 482 × 330 × 88 mm (19″ × 13″ × 3.5″) and weighs approximately 12 kg without drives.
Can I mix SSD brands and capacities?
You can mix brands and capacities, but for optimal performance and reliability we recommend uniform SSDs across all bays.
How is health monitoring handled?
Use your host’s storage management utility to monitor SMART data, temperature, and wear leveling for each NVMe SSD installed.
What is the typical power consumption?
Under full load, the FX2421 draws approximately 350 W, with idle power around 150 W, depending on SSD selection.
Is remote management available?
Remote management is handled via your host platform’s existing management interface; the FX2421 itself does not provide a separate GUI.
What environments are supported?
The FX2421 operates in 0–40 °C (32–104 °F) with 5–95% non-condensing humidity, making it suitable for standard data center racks.
What warranty covers the FX2421?
The unit comes with a standard three-year limited hardware warranty, including parts and labor for manufacturer defects.
How can I optimize performance?
Use enterprise-grade NVMe SSDs, ensure PCIe 3.0 x8 link stability, and configure RAID tiers according to your workload’s I/O profile.
Where can I purchase replacement parts?
Authorized resellers and your vendor’s online store stock replacement fans, power supplies, and drive trays for the FX2421.