HUS724040ALS640 Western Digital 4TB WD SAS-6GBPS 7.2K RPM HDD with 64MB Buffer

Western Digital 4TB WD SAS-6GBPS HDD

The Western Digital HUS724040ALS640 Ultrastar 7K4000 4TB SAS 6Gbps 3.5-inch Hard Drive is an enterprise-class storage solution, designed for reliability, scalability, and consistent performance in demanding data environments.

General Information

• Brand: Western Digital
• Part Number: HUS724040ALS640
• Device Type: Ultrastar 7K4000 Enterprise Hard Drive

Technical Specifications

• Capacity: 4TB
• Form Factor: 3.5-inch
• Interface: SAS 6Gbps
• Areal Density (Maximum): 475 Gbits/sq. in.
• Load/Unload Cycles (at 40°C): 600,000
• MTBF: 2 Million Hours

Performance Attributes

• Rotational Speed: 7200 RPM
• Buffer Size: 64MB
• Average Seek Time: 8.0 ms
• Interface Transfer Rate (Maximum): 600 Mbps
• Sustained Transfer Rate (Typical): 172 Mbps

Physical Characteristics

• Z-Height: 26 mm
• Width x Depth: 101.6 mm (+/-0.25) x 147 mm
• Weight: 690 g (typical)

Environmental Specifications

Operating Conditions

• Ambient Temperature: 5°C to 60°C
• Shock Resistance (Half-sine Wave 2 ms): 70 G
• Random Vibration (5 to 500 Hz): 0.67 g RMS (XYZ)

Non-Operating Conditions

• Ambient Temperature: -40°C to 70°C
• Shock Resistance (Half-sine Wave 1 ms): 300 G

WD HUS724040ALS640 4TB SAS 6GBPS 7.2K RPM HDD Overview

The Western Digital HUS724040ALS640 4TB SAS 6Gbps 7.2K RPM hard drive represents a powerful and reliable storage solution designed specifically for enterprise-level environments. This category of hard drives is engineered to support data-intensive applications, offering a balance between high capacity, consistent performance, and long-term durability. Businesses that require dependable storage infrastructure, including data centers, cloud computing platforms, and virtualization environments, often rely on such enterprise SAS drives to maintain seamless operations and uninterrupted access to mission-critical data.

Enterprise-Class Storage Architecture

The architecture behind enterprise-grade SAS hard drives is fundamentally different from consumer-grade storage devices. The Western Digital HUS724040ALS640 belongs to a class of drives that are optimized for 24/7 operation, ensuring continuous performance without degradation. Built with advanced firmware and robust mechanical components, this drive category provides higher reliability and error correction capabilities. The Serial Attached SCSI interface ensures faster data transfer rates and improved command queuing compared to traditional SATA drives, making it an ideal choice for high-demand enterprise workloads.

Advanced SAS Interface Advantages

The SAS 6Gbps interface featured in this category enhances communication between the storage device and the server. It allows for dual-port connectivity, ensuring redundancy and failover capabilities in enterprise environments. This ensures that even if one data path fails, the system continues to operate without interruption. The interface also supports full-duplex data transmission, enabling simultaneous read and write operations, which significantly boosts overall system efficiency and reduces latency.

Scalability and Integration Capabilities

One of the key strengths of this hard drive category is its scalability. Organizations can easily integrate multiple drives into RAID configurations, expanding storage capacity while maintaining performance and redundancy. This flexibility makes the Western Digital HUS724040ALS640 an excellent choice for growing enterprises that need scalable storage solutions capable of adapting to increasing data demands.

High Capacity Storage for Data-Driven Environments

The 4TB storage capacity offered by this category of hard drives is suitable for organizations dealing with large volumes of structured and unstructured data. Whether it is database storage, media content management, or backup systems, the high capacity ensures that businesses can store vast amounts of data efficiently. The drive is designed to handle workloads typical in enterprise environments, including transactional databases, analytics processing, and file storage systems.

Optimized for Big Data and Analytics

In modern data-driven environments, the ability to store and process large datasets is crucial. The Western Digital HUS724040ALS640 is optimized to support big data applications, enabling faster data retrieval and processing. Its consistent performance ensures that analytics workloads can be executed efficiently, allowing organizations to derive valuable insights without delays.

Reliable Data Retention and Integrity

Data integrity is a critical concern for enterprises, and this category of hard drives incorporates advanced error correction technologies to ensure accurate data storage and retrieval. Features such as rotational vibration sensors and enhanced error recovery mechanisms help maintain data integrity even in high-density storage environments.

Efficient Data Management Solutions

The drive supports efficient data management practices, enabling IT administrators to organize and manage data effectively. Its compatibility with enterprise storage management systems allows seamless integration into existing infrastructures, reducing deployment complexity and operational overhead.

Performance and Speed Optimization

Performance is a defining characteristic of enterprise SAS hard drives. With a rotational speed of 7.2K RPM and a 64MB buffer, the Western Digital HUS724040ALS640 delivers consistent data transfer rates suitable for a wide range of enterprise applications. While it may not match the speed of solid-state drives, it provides a cost-effective balance between performance and capacity, making it a practical choice for bulk storage.

Cache Buffer Efficiency

The 64MB buffer plays a crucial role in optimizing data transfer operations. It temporarily stores frequently accessed data, reducing the time required to retrieve information from the disk. This results in improved read and write performance, particularly in environments with repetitive data access patterns.

Reduced Latency and Improved Throughput

Latency reduction is essential for maintaining high system performance. The SAS interface combined with optimized firmware ensures minimal latency during data transactions. This contributes to higher throughput, allowing systems to handle multiple operations simultaneously without performance bottlenecks.

Balanced Workload Handling

This category of hard drives is designed to handle balanced workloads, making it suitable for applications that require consistent performance rather than peak speed. It performs reliably under continuous operation, ensuring that enterprise systems remain responsive and efficient.

Durability and Reliability in Enterprise Environments

Durability is a key consideration for enterprise storage solutions, and the Western Digital HUS724040ALS640 is built to withstand demanding operating conditions. The drive is engineered with high-quality components that ensure long-term reliability, reducing the risk of data loss and system downtime.

24/7 Operational Capability

Unlike consumer-grade drives, this category is designed for continuous operation. It can function reliably around the clock, making it ideal for data centers and mission-critical applications where downtime is not an option. The robust design ensures consistent performance even under heavy workloads.

Enhanced Vibration Protection

Enterprise environments often involve multiple drives operating in close proximity, which can lead to vibrations that affect performance. This hard drive category incorporates advanced vibration protection technologies that maintain stability and accuracy, ensuring consistent data access even in high-density storage arrays.

Extended Lifespan and Reliability Metrics

The drive offers a high mean time between failures, reflecting its reliability and durability. This makes it a cost-effective investment for businesses seeking long-term storage solutions with minimal maintenance requirements.

Compatibility and Versatility

The Western Digital HUS724040ALS640 is compatible with a wide range of enterprise servers and storage systems. Its standardized form factor and interface ensure seamless integration into existing infrastructures, making it a versatile choice for various applications.

Server and Storage System Integration

This category of hard drives is designed to work seamlessly with enterprise servers, including rack-mounted and blade systems. Its compatibility with RAID controllers and storage arrays allows organizations to build flexible and efficient storage solutions tailored to their specific needs.

Virtualization and Cloud Support

Virtualization and cloud computing environments require reliable storage solutions that can handle dynamic workloads. The Western Digital HUS724040ALS640 supports these environments by providing consistent performance and scalability, enabling efficient resource allocation and management.

Cross-Platform Compatibility

The drive is compatible with multiple operating systems and storage platforms, ensuring flexibility in deployment. This cross-platform support simplifies integration and allows businesses to adapt their storage infrastructure as needed.

Energy Efficiency and Thermal Management

Energy efficiency is an important consideration in modern data centers, and this category of hard drives is designed to minimize power consumption while maintaining performance. Efficient thermal management ensures that the drive operates within optimal temperature ranges, reducing the risk of overheating and extending its lifespan.

Optimized Power Consumption

The drive incorporates energy-efficient technologies that reduce power usage without compromising performance. This helps organizations lower operational costs and improve overall energy efficiency in their data centers.

Advanced Cooling Mechanisms

Effective cooling is essential for maintaining performance and reliability. The drive is designed to dissipate heat efficiently, ensuring stable operation even in high-density storage environments.

Environmental Impact Considerations

By reducing power consumption and improving efficiency, this category of hard drives contributes to environmentally sustainable practices. Organizations can achieve their sustainability goals while maintaining high-performance storage infrastructure.

Use Cases and Industry Applications

The Western Digital HUS724040ALS640 is suitable for a wide range of applications across various industries. Its combination of capacity, performance, and reliability makes it an ideal choice for businesses with diverse storage needs.

Data Centers and Enterprise IT

Data centers rely on robust storage solutions to handle large volumes of data. This category of hard drives provides the reliability and scalability required for such environments, ensuring continuous operation and efficient data management.

Media and Content Storage

Organizations involved in media production and content management require high-capacity storage solutions. The 4TB capacity allows for efficient storage of large media files, including videos, images, and audio content.

Backup and Archival Systems

Backup and archival systems benefit from the reliability and capacity of this hard drive category. It ensures secure storage of critical data, enabling organizations to recover information in case of system failures or data loss.