WUS721208BLE6L4 Western Digital Ultrastar DC HA340 8TB 7.2K RPM SATA-6Gbps HDD

Overview of Western Digital WUS721208BLE6L4 8TB HDD

The Western Digital Ultrastar DC HA340 8TB enterprise hard disk drive is engineered to meet the demanding storage needs of modern data centers, enterprise servers, and business-critical IT infrastructures. Designed for continuous operation, this internal HDD delivers dependable performance, high workload ratings, and long-term durability for mission-critical environments.

General Information

• Brand Name: Western Digital
• Part Number: WUS721208BLE6L4
• Series: Ultrastar DC HA340
• Product Type: Hard Disk Drive

Technical Specifications

• Rotational Speed: 7,200 RPM
• Sustained Transfer Rate: Up to 267 MB/s
• Interface Transfer Rate: 6 Gb/s
• Average Latency: 4.16 ms
• Cache Buffer: 256 MB

Physical Specifications

• Form Factor: 3.5 inch internal HDD
• Z-Height: 26.1 mm
• Dimensions (W x D): 101.6 x 147 mm
• Weight: Approximately 715 g

The Western Digital WUS721208BLE6L4 8TB 7.2K RPM HDD

The Western Digital WUS721208BLE6L4 Ultrastar DC HA340 8TB hard disk drive represents a specialized category of enterprise SATA storage engineered for data-intensive workloads, mission-critical infrastructure, and scalable storage platforms. Positioned within the Ultrastar DC HA340 series, this 3.5-inch internal HDD is designed to deliver consistent performance, high reliability, and optimized capacity utilization for modern data centers and enterprise IT ecosystems. With an 8TB storage capacity, 7,200 RPM spindle speed, SATA 6Gbps interface, and a robust 256MB buffer cache, this hard drive category addresses the growing demand for dependable bulk storage in always-on environments.

Ultrastar DC HA340 Series

The Ultrastar DC HA340 series occupies a strategic position within Western Digital’s enterprise HDD portfolio, targeting mainstream data center applications that require dependable SATA-based storage without compromising on reliability. This category is optimized for read-intensive and mixed-use workloads commonly found in content repositories, cloud storage pools, virtualization platforms, and enterprise backup solutions. The design philosophy emphasizes mechanical stability, firmware optimization, and workload consistency across multi-drive environments.

8TB Capacity Tier for Balanced Storage

The 8TB capacity point of the WUS721208BLE6L4 Ultrastar DC HA340 HDD serves organizations that require a balanced approach between storage density and cost efficiency. This capacity tier is ideal for enterprises that need to expand storage pools incrementally without over-provisioning. It allows IT administrators to scale infrastructure methodically while maintaining manageable rebuild times and optimized RAID configurations.

7.2K RPM Performance

At the core of this enterprise HDD category is a 7,200 RPM rotational speed, which provides a reliable balance between performance throughput and energy efficiency. The 7.2K RPM spindle allows the WUS721208BLE6L4 drive to deliver consistent data transfer rates suitable for enterprise workloads such as database archiving, large file storage, and transactional logging systems. This rotational speed is widely recognized as a standard for enterprise-class SATA drives due to its proven reliability and performance stability.The drive’s performance profile is enhanced by a 256MB buffer cache, which plays a critical role in smoothing data flow, reducing latency, and optimizing read/write operations. In environments with concurrent access patterns, the cache helps absorb bursts of activity, ensuring that applications experience predictable response times. This characteristic is particularly important in virtualized environments where multiple workloads share the same physical storage resources.

SATA 6Gbps Interface

The SATA 6Gbps interface of the Ultrastar DC HA340 8TB HDD ensures broad compatibility across a wide range of enterprise servers, storage arrays, and controllers. SATA remains a dominant interface in many enterprise and nearline storage deployments due to its cost-effectiveness, mature ecosystem, and ease of integration. The 6Gbps bandwidth provides ample throughput for high-capacity HDDs, supporting sustained data transfers without becoming a bottleneck for typical enterprise applications.This interface choice allows organizations to deploy the WUS721208BLE6L4 drive in existing SATA-based infrastructures while still benefiting from enterprise-grade reliability features. It also supports mixed-drive environments where SATA and SAS storage coexist, enabling flexible architecture designs that align with workload requirements and budget constraints.

256MB Buffer Cache

A substantial onboard buffer cache is a defining feature of enterprise hard disk drives in this category. The 256MB cache enables efficient handling of read and write operations by temporarily storing frequently accessed data and optimizing command execution. This improves overall responsiveness and throughput, particularly in workloads involving large sequential transfers.The cache works in conjunction with advanced firmware algorithms to prefetch data, manage write operations, and reduce mechanical latency. This intelligent caching behavior enhances performance consistency across diverse workload patterns.

512e Advanced Format Technology

The 512e (512-byte emulation) sector format used by this hard drive category is designed to bridge compatibility between legacy systems and modern storage technologies. Advanced Format drives use larger physical sectors to improve storage efficiency and error correction capabilities, while 512e emulation ensures that operating systems and applications expecting traditional 512-byte sectors continue to function seamlessly.

3.5-Inch Form Factor

The 3.5-inch form factor remains the standard for high-capacity enterprise hard disk drives due to its ability to accommodate multiple platters and deliver greater storage density. This category leverages the form factor to maximize capacity while maintaining mechanical stability and thermal efficiency.The physical dimensions are optimized for rack-mounted servers and storage enclosures, ensuring efficient airflow and ease of installation. This consistency simplifies infrastructure planning and supports large-scale deployments.

Energy Efficiency

Energy efficiency is an increasingly important consideration in data center operations, and the Ultrastar DC HA340 8TB drive category is designed with power optimization in mind. The 7,200 RPM spindle speed strikes a balance between performance and power consumption, helping organizations manage energy costs without sacrificing throughput.

Scalability and Future-Proof Storage

The Western Digital Ultrastar DC HA340 8TB HDD category supports scalable storage strategies that can evolve alongside organizational needs. Its standardized design and broad compatibility make it easy to integrate into expanding storage infrastructures, whether scaling vertically within existing systems or horizontally across distributed environments.As data volumes continue to grow, enterprises require storage solutions that can adapt without extensive reconfiguration. The WUS721208BLE6L4 drive provides a reliable foundation for such growth, enabling incremental capacity expansion while maintaining consistent performance and reliability.