Overview

The SR4-B32A is a 4-bay hardware RAID enclosure designed for computers with standard USB-A ports, making it an ideal storage upgrade for legacy workstations and desktop PCs. With the included USB-C to USB-A cable, it offers simple plug-and-play deployment and supports host link rates of up to 10Gbps on compatible USB host systems.

A dedicated hardware RAID controller enables RAID 5 for single-drive fault tolerance, while also supporting RAID 0, JBOD, and BIG for different capacity and performance needs. Built for sustained daily use, the SR4-B32A combines a 150W internal power supply, active cooling, and hot-swappable, lockable drive trays to deliver dependable storage for backup, content creation, research, and other data-intensive workflows.

Features

1. USB-A Connectivity for Broad System Compatibility

● Designed for desktops and workstations equipped with standard USB-A ports

● Includes a USB-C to USB-A cable for immediate deployment

● Supports host link rates up to 10Gbps with compatible USB 3.2 Gen 2 USB-A systems

2. Dedicated Hardware RAID

● Built-in hardware RAID controller reduces reliance on host CPU resources

● Supports RAID 0, RAID 5, JBOD, and BIG modes

● In RAID 5, the array remains accessible after a single-drive failure

● Automatic rebuild begins after a compatible replacement drive is installed

3. Professional Hardware Design

● Supports 4 × 3.5" or 2.5" SATA III 6Gb/s HDDs and SSDs

● Hot-swappable, lockable drive trays simplify service and improve physical drive security

● 150W internal power supply supports stable operation during sustained workloads

4. Status Monitoring and Cooling

● Front-panel LEDs indicate power, drive activity, drive failure, and rebuild progress

● Rebuild progress in four steps: 25% / 50% / 75% / 100%

● Integrated buzzer alarm with a physical Mute ON/OFF switch

● Rear 80mm cooling fan with a High/Low speed switch for balancing cooling performance and noise levels

● RAID mode is configured through hardware controls; Windows users can use the optional GUI to monitor system status and alerts

5. Cross-Platform and Mobile Workflow Support

● Plug-and-play support for Windows, macOS, and Linux

● Supports Easy Data Vault backup and restore on compatible USB-C iPhone and iPad models when using a separate USB-C to USB-C cable

Why Choose the SR4-B32A?

1. Made for USB-A Systems

Add high-capacity RAID storage to existing desktops and workstations without changing your current host environment.

2. RAID 5 Protection for Everyday Reliability

Keep data accessible even if one drive fails, making the system well suited for backup, archive, and project storage.

3. Stable Under Sustained Workloads

A 150W internal power supply and active cooling help support long transfers, rebuild operations, and continuous use.

4. Easier Service and Monitoring

Hot-swappable, lockable drive trays, front-panel LEDs, and an audible alarm make maintenance more straightforward.

5. Hardware RAID Without Host Overhead

The dedicated RAID controller manages the array independently, reducing dependence on system CPU resources.

Applications

1. Creative Studio Backup & Archive

Store large photo libraries, video projects, and production assets in a protected RAID 5 environment for fast local access and organized retention.

2. Departmental Local File Storage

Provide teams with dependable local storage for records, design assets, reports, and shared project data without the complexity of network storage.

3. Research & Lab Data Protection

Safeguard experiment data, instrument exports, and long-term project files in a high-capacity RAID system with single-drive fault tolerance.

4. Legacy Workstation Expansion

Add professional-grade external RAID storage to older desktop systems that still rely on USB-A connectivity.

5. Scheduled Backup Target

Use the SR4-B32A as a high-capacity backup destination for Windows, macOS, or Linux systems that have outgrown single-drive external storage.

6. Surveillance Footage Archive

Create organized local storage for offloaded surveillance footage and other large sequential data sets requiring dependable retention.

Comparison: SR4-B32 vs. SR4-B32A

Frequently Asked Questions (FAQ)

Q1: How is the SR4-B32A different from the SR4-B32?

A: The SR4-B32A is designed for USB-A host compatibility and includes a USB-C to USB-A cable for direct connection to legacy desktops and workstations. The SR4-B32 is optimized for USB-C workflows and can support higher host bandwidth on compatible systems.

Q2: Which RAID modes are supported?
 

A: The SR4-B32A supports RAID 0, RAID 5, JBOD, and BIG.

Q3: What happens if a drive fails in RAID 5 mode?
 

A: The array enters a degraded state, but data remains accessible. After a compatible replacement drive is inserted, the system automatically begins rebuilding the array.

Q4: Can the drives be hot-swapped?

A: Yes. The lockable drive trays are hot-swappable, allowing drive replacement without powering down the enclosure.

Q5: How do I monitor system status?
 

A: System status is shown through front-panel LEDs and an audible buzzer alarm. Windows users can also use the optional GUI for monitoring and alerts.

Q6: Does it work with USB-C or Thunderbolt 3/4 hosts?

A: Yes. The enclosure operates as a standard USB storage device when connected to compatible USB-C or Thunderbolt 3/4 hosts. A separate USB-C to USB-C cable is required because the included cable is USB-C to USB-A.

Q7: Is the fan adjustable?
 

A: Yes. The rear 80mm cooling fan includes a High/Low speed switch to help balance thermal performance and noise levels.

Q8: What operating systems are supported?
 

A: The SR4-B32A supports Windows 7 or later, macOS 10.10 or later, and Linux.

Q9: Does it support backup from mobile devices?
 

A: Yes. It supports Easy Data Vault backup and restore on compatible USB-C iPhone and iPad models when connected with a separate USB-C to USB-C cable.

Performance test result for reference. The test result will vary depend on the test environment.

Note: The test was using a separate USB-C to USB-C cable with USB 20Gbps host.

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Specification