Storage Chassis / U-424HD
4U 24-Bay Storage Server Rackmount Chassis
A 4U twenty-four-bay storage chassis with eight expansion slots and 120mm cooling — the density ceiling of the U Storm line.
Product Overview
What the U-424HD is built for.
The U storage server series rackmount has the unique outward appearance design, but the functionality and flexibility make U series a new breed of storage server. Also U series has effective cooling system. As SAS and SATA technology has become a more cost effective solution, we have taken a step forward to prepare the migration of new technology and provide the Slim SAS SFF-8654 12Gb/s, 24Gb/s backplane to support both latest SAS and SATA hard drives, and also provide redundant power supply to ensure total up time of mission critical server applications.
Key Features
Engineered for reliability and integration.
- Fiber-optic drive tray status indicators for at-a-glance bay diagnostics
- Optimized front-to-back airflow path engineered for fully populated drive bays
- Cooling fans with status monitoring for early failure detection
- Front-access USB 3.0 for on-site service and commissioning
- Power, fan-failure, and HDD activity LED indicators on the front panel
- Power and alarm-reset switches for field diagnostics
- Fully RoHS-compliant construction for global deployment
- Supports 12Gb/s and 24Gb/s SAS/SATA hard drives on a SlimSAS SFF-8654 backplane
- Anodized-color locking front panel — a proven base for custom color and silk-screen programs
Specifications
Technical specifications.
| Model Number | U-424HD |
|---|---|
| Product Category | Storage Chassis |
| Form Factor | 4U |
| Motherboard Support | 12" x 13" |
| Drive Bays | 24 × 3.5" hot-swap · 2.5" Drive (internal): 1 · Hotswap 3.5": 1 |
| HDD Type | 2.5" & 3.5" SAS I/II/III/IV & SATA I/II/III |
| Backplane | Slimline SAS SFF-8654 host interface · SAS/SATA drive interface (12Gb/s, 24Gb/s) |
| Expansion Slots | 8 |
| Cooling | 4x120mm |
| PSU Support | PS2 single or redundant |
| Front Connector | 2x USB 3.0 |
| Security | Front Bezel |
| Indicators | Power + Fan Failure + HDD LED |
| Switches | Power, Reset, Mute |
| Material | Front bezel: Heavy-duty SGCC Cold-rolled Steel · Handle: 2.0mm Heavy-duty SGCC Cold-rolled Steel · Main chassis: Heavy-duty SGCC Cold-rolled Steel |
| Dimensions | 18.98" x 6.98" x 21.21" · 482.1 mm x 177.3 mm x 538.7 mm |
| Certification | RoHS compliant |
Downloads
Documentation & drawings.
Applications
Where the U-424HD is deployed.
Maximum-Density Storage
Twenty-four hot-swap bays in a 21" deep 4U body.
Object / Scale-Out Storage
Eight slots for HBA, NIC, and NVMe cache.
Data Center
120mm fan wall for sustained full-load airflow.
Media Archive
Deep nearline pools for broadcast and VFX.
Backup & Archive
Mixed SAS/SATA tiers in one enclosure.
OEM/ODM Hardware Platform
Backplane, airflow, and branding customization.
Customization Options
Adapt the U-424HD to your program.
iStarUSA Design-In services cover mechanical, electrical, and lifecycle customization scopes.
Front Panel Customization
Mechanical Modification
Storage Configuration
Power Supply Options
Cooling Design
Branding / Labeling
Long Lifecycle Planning
Two Ways to Buy
Order the standard model — or use it as a platform.
The U-424HD is available both as a ready-to-ship standard product and as a starting point for OEM/ODM customization. Pick the path that matches your project.
Option A
Use as Standard Product
Order the U-424HD with its published specifications. Ideal when you need a proven configuration, immediate quotation, and comparable datasheets against other models.
- Published specifications and datasheets
- Standard configuration, ready to quote
- Compatible with existing integrations
Option B
Use as Customizable Platform
Start with the U-424HD and adapt it for OEM/ODM, Design-In, mechanical modification, or long-term supply programs. Our engineering team supports the full customization scope.
- OEM/ODM branding and mechanical modification
- Design-In engineering support
- Long-lifecycle and BOM stability planning
Related Products
Explore adjacent options.
Design-In Center
Take U-424HD into your next project.
Request a quotation on the standard SKU, or start a Design-In conversation around customization, lifecycle, and integration.