Western Digital WUS721010AL5204 10TB HDD
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Western Digital WUS721010AL5204 10TB Hard Drive Ultrastar DC Refurbished

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Part Number#: WUS721010AL5204
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Short Description:
WUS721010AL5204 Ultrastar DC HC330 10 Terabytes (TB) 7200 Revolutions Per Minute (RPM) Serial-Attached SCSI (SAS)-12 Gigabytes Per Second (GBPS) 256 Megabytes (MB) Buffer 512E SE Enterprise Hard Disk Drive | Made by Western Digital | Refurbished
Western Digital
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Introduction of the 10TB Hard Drive

In the realm of data storage, Western Digital stands as a prominent player, known for its reliable and high-performance hard disk drives (HDDs). One such offering is the Western Digital WUS721010AL5204 Ultrastar DC HC330, a formidable solution catering to enterprise-level storage needs. In this detailed exploration, we delve into the key features and specifications that make this HDD a noteworthy option.

In the ever-evolving landscape of data storage solutions, the Western Digital WUS721010AL5204 takes center stage as a robust and high-capacity hard disk drive (HDD). Boasting an impressive 10 terabytes (TB) of storage, a swift 7200 revolutions per minute (RPM), and a cutting-edge Serial-Attached SCSI (SAS) interface at 12 gigabytes per second (GBPS), this drive is engineered to meet the demands of modern data-intensive applications. Join us as we delve into the details of this enterprise-grade storage solution.

Key Specifications

Storage Capacity

The Ultrastar DC HC330 boasts an impressive storage capacity of 10 terabytes, making it a suitable choice for applications demanding vast data storage. Whether you're dealing with extensive databases, multimedia content, or big data analytics, this HDD provides the necessary space to accommodate large volumes of information.

Rotational Speed

The rotational speed of a hard disk drive is a crucial factor influencing its performance. The Ultrastar DC HC330 operates at 7200 RPM, signifying that the disk spins 7200 times per minute. This high rotational speed enhances data access speed, reducing latency and ensuring swift read and write operations.

Serial-Attached SCSI (SAS) - 12 Gigabytes Per Second (GBPS)

The choice of interface plays a pivotal role in determining how efficiently data is transferred between the HDD and other components of a system. The Ultrastar DC HC330 employs Serial-Attached SCSI (SAS) technology with a blazing-fast data transfer rate of 12 gigabytes per second (GBPS). This ensures seamless communication between the HDD and the rest of the storage infrastructure, contributing to overall system performance.

Buffer Size: 256 Megabytes (MB)

A sizable buffer is essential for optimizing data transfer and enhancing overall responsiveness. The Ultrastar DC HC330 is equipped with a generous 256 megabytes (MB) buffer, acting as a temporary storage area for frequently accessed data. This cache helps improve read and write speeds, particularly in scenarios involving repetitive data access patterns.

Advanced Format: 512E SE Enterprise

The Ultrastar DC HC330 features an advanced format known as 512E, specifically designed for enterprise applications. This Advanced Format aligns the physical and logical sectors, improving data integrity and enhancing compatibility with modern operating systems. The SE (Self-Encrypting) Enterprise designation indicates that this HDD incorporates robust security features to protect sensitive data, making it an ideal choice for enterprise-level storage solutions.

Performance Metrics

Seek Time

  • Read Time (Typical): 8.0 Milliseconds (MS)
  • Write Time (Typical): 8.6 Milliseconds (MS)

Seek time is a critical performance metric, measuring the time it takes for the HDD's read/write heads to locate and access specific data on the disk. The Ultrastar DC HC330 demonstrates impressive seek times, with typical read and write times of 8.0 and 8.6 milliseconds, respectively. This swift access ensures efficient data retrieval, contributing to overall system responsiveness.

Average Latency

Average latency represents the time it takes for the HDD to rotate the desired data under the read/write heads. The Ultrastar DC HC330 excels in this aspect, with an average latency of 4.16 milliseconds. Lower latency values contribute to reduced waiting times during data access, enhancing the overall user experience.

Interface Transfer Rate

The interface transfer rate signifies the speed at which data is exchanged between the HDD and the connected system. With an impressive interface transfer rate of 12 gigabytes per second (GBPS), the Ultrastar DC HC330 ensures efficient and rapid data transfer, making it well-suited for high-throughput applications and data-intensive workloads.

Sustained Transfer Rate

The sustained transfer rate represents the speed at which data can be continuously read or written over an extended period. The Ultrastar DC HC330 delivers a sustained transfer rate of up to 273 megabytes per second (MBPS). This sustained high-speed performance is particularly beneficial for applications requiring consistent and reliable data throughput.

Big Data Analytics with Distributed File Systems

In the realm of big data analytics, distributed file systems play a pivotal role in managing and analyzing vast datasets. The Ultrastar DC HC330 is well-suited for such applications, providing the necessary storage capacity and high-speed data access required for processing and extracting insights from massive datasets. Whether used with Apache Hadoop® or similar distributed file systems, this HDD facilitates efficient big data processing.

Rack-Mounted Storage Enclosures

For organizations requiring compact and scalable storage solutions, rack-mounted storage enclosures are a popular choice. The Ultrastar DC HC330 seamlessly integrates into such setups, offering high-capacity storage within the confines of a standard rack. This adaptability makes it an ideal choice for data centers and server rooms where space optimization is a key consideration.

Server-Based Distributed Storage Systems

Modern server architectures often rely on distributed storage systems to ensure optimal resource utilization and data availability. The Ultrastar DC HC330 aligns with these requirements, providing the necessary storage capacity and performance to support server-based distributed storage systems. Whether part of a cloud infrastructure or an on-premises server cluster, this HDD contributes to the efficiency of storage-centric tasks.

Direct and Network Attached Storage (DAS & NAS)

The Ultrastar DC HC330 is well-suited for both Direct Attached Storage (DAS) and Network Attached Storage (NAS) configurations. In DAS setups, it serves as a high-capacity internal storage solution, while in NAS environments, it seamlessly integrates into networked storage architectures. This versatility makes it a valuable choice for a wide range of storage scenarios, from personal data storage to enterprise-level network storage solutions.

RAID Arrays

Redundant Array of Independent Disk (RAID) configurations are essential for data protection and performance enhancement. The Ultrastar DC HC330's high storage capacity and robust performance make it an excellent candidate for RAID arrays. Whether configured for data mirroring, striping, or parity, this HDD contributes to the reliability and performance of RAID-based storage systems.

Reliability and Durability

Mean Time Between Failures (MTBF): 2 Million Hours

Reliability is a paramount consideration in enterprise storage solutions. The Ultrastar DC HC330 boasts an impressive Mean Time Between Failures (MTBF) of 2 million hours. This metric represents the expected operational time between significant failures, highlighting the robust design and durability of this HDD. Organizations can rely on the Ultrastar DC HC330 for consistent and dependable performance over extended periods.


Reliability and error correction are important factors to consider when selecting a hard drive for storage and archiving. The Western Digital WUS721010AL5204 Enterprise Hard Drive is designed to provide high levels of reliability and error correction.

  • The hard drive features advanced error correction algorithms that detect and correct errors in the data, ensuring the integrity and availability of your stored data. Additionally, the drive also has a built-in advanced ECC (Error Correction Code) which detects and corrects errors that might occur during data transfer. This feature can help to prevent data corruption and ensure that your stored data is safe and secure.
  • In terms of reliability, the hard drive is designed with a high MTBF (Mean Time Between Failure) rating, which is an indicator of the drive's expected lifespan and reliability. This means that the Western Digital WUS721010AL5204 hard drive has been tested and found to be highly reliable, with a low probability of failure.
  • Furthermore, the hard drive also features RAID support, which allows multiple physical hard drives to be combined into a single logical drive for the purposes of data redundancy, and this can help to improve the overall reliability and availability of your stored data.

General Information about this Western Digital WUS721010AL5204

  • Manufacturer: Western Digital
  • Model Number or SKU#: WUS721010AL5204
  • Product Type: Hard Disk Drive (HDD)
  • Sub-Type: SAS-12GBPS
  • Product Line: Ultrastar
  • Product Series: DC HC330

Key Features of SAS-12GBPS HDD

  • Storage Capacity: 10 TB
  • Enclosure: Internal
  • Max. Areal Density: 869 Gbits/SQ. IN
  • Interface: SAS-12GBPS
  • Drive Dimensions: 3.5 Inch
  • MTBF (Mean Time Between Failures): 2 Million Hours

Drive Performance

  • Interface Transfer Rate: 1200 MBPS
  • Sustained Transfer Rate: Up To 273 MBPS
  • Seek Time (Read, Typical): 8.0 MS
  • Seek Time (Write, Typical): 8.6 MS
  • Average Latency: 4.16 MS
  • Buffer: 256 MB
  • Rotational Speed: 7200 RPM

Applications & Workloads

  • Distributed File Systems (e.g., Apache Hadoop®) for Big Data Analytics
  • Rack-mounted Storage Enclosures
  • Server-Based Distributed Storage Systems
  • Direct & Network Attached Storage (DAS & NAS)
  • RAID Arrays

In summary, the Western Digital WUS721010AL5204 Ultrastar DC HC330 stands out as a reliable, high-capacity, and high-performance hard disk drive catering to the diverse needs of enterprise-level storage. With advanced features such as a 10-terabyte storage capacity, 7200 RPM rotational speed, SAS-12GBPS interface, and robust security features, it addresses the demands of modern data-intensive applications.

Whether deployed in big data analytics, rack-mounted storage enclosures, server-based distributed storage systems, DAS/NAS configurations, or RAID arrays, the Ultrastar DC HC330 delivers consistent and efficient performance. Its impressive reliability, as indicated by a 2 million hours MTBF, underscores its suitability for mission-critical storage environments.

For organizations seeking a storage solution that balances capacity, performance, and reliability, the Western Digital WUS721010AL5204 Ultrastar DC HC330 emerges as a compelling choice, ensuring the seamless handling of data in demanding enterprise settings.

Western Digital
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

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Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

Here, you can check more available conditions of your desired product WUS721010AL5204 at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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