WD20EARX Western Digital 2TB Hard Drive
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Western Digital WD20EARX 2TB 5.4K RPM Hard Drive SATA 6GBPS Refurbished

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Part Number#: WD20EARX
List Price was: $657.58
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Short Description:
WD20EARX Caviar Green 2 Terabytes (TB) 5400 Revolutions Per Minute (RPM) Serial Advanced Technology Attachment (SATA) 64Megabyte (MB) Buffer 3.5 Inch Form Factor Low Profile 6 Gigabits Per Second (GBPS) Hard Disk Drive | Made by Western Digital | Refurbished
Western Digital
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Product Overview of the Western Digital WD20EARX 2TB Hard Drive

The Western Digital WD20EARX 2TB 5.4K RPM SATA 6GBPS Hard Drive is a high-capacity, reliable storage solution for desktop and laptop computers. It features a storage capacity of 2 terabytes and a rotation speed of 5400 RPM. The hard drive also uses a SATA III (6 Gb/s) interface, which provides faster data transfer speeds compared to older SATA interfaces.

Storage Capacity 2 Terabytes (TB)

One of the primary specifications to consider when purchasing an HDD is its storage capacity. The Western Digital WD20EARX Caviar Green boasts an impressive 2 terabytes (TB) of storage space. But what does this mean in practical terms?

The Importance of Storage Capacity
  • Media Storage: With 2TB of storage, you can store a significant amount of data, including photos, videos, music, documents, and software. This makes it suitable for personal use, where you need to keep your digital life organized.
  • Media Editing: For those involved in media editing or content creation, a 2TB storage drive can store large video files, high-resolution images, and audio recordings without worrying about running out of space.
  • Backup Solution: This HDD can also serve as a backup solution for your computer. You can regularly back up your important files to ensure you never lose crucial data.
  • Gaming: Gamers can benefit from the ample storage for their game library. With modern games often taking up a lot of space, a 2TB HDD provides enough room for a diverse collection.
Speed of 5400 Revolutions Per Minute (RPM)

The speed of an HDD is measured in revolutions per minute (RPM). The Western Digital WD20EARX Caviar Green operates at 5400 RPM, which is an important factor in determining its performance.

Understanding RPM
  • Faster Access: A higher RPM typically results in faster data access times. This means your computer can read and write data more quickly, improving overall system performance.
  • Lower Power Consumption: 5400 RPM drives are known for their energy efficiency. They consume less power than higher RPM drives, making them suitable for systems where power efficiency is a concern.
  • Quiet Operation: The lower RPM also contributes to quieter operation, as the drive's components move at a more leisurely pace, reducing noise.
Application Considerations

The 5400 RPM speed of the WD20EARX Caviar Green is suitable for various applications. While it may not match the speed of high-end 7200 RPM or solid-state drives (SSDs), it strikes a balance between performance and energy efficiency. This makes it an ideal choice for:

  • General Use: Everyday computing tasks, such as web browsing, document editing, and email, are well-supported by this RPM.
  • Media Playback: If you use your HDD for storing and playing media files, the 5400 RPM speed is more than sufficient for smooth playback.
  • Archiving: When you need to store data long-term, especially if it's data that you access infrequently, the 5400 RPM drive is cost-effective and efficient.
  • Backup Drives: Backup drives benefit from lower power consumption and quieter operation, as they may remain connected for extended periods.
Interface Serial Advanced Technology Attachment (SATA)

The Western Digital WD20EARX Caviar Green utilizes a Serial Advanced Technology Attachment (SATA) interface. This interface standard plays a crucial role in how the HDD connects to your computer.

SATA of the Industry Standard

SATA is the most common interface for connecting internal storage devices, including HDDs and SSDs, to a computer's motherboard. It has replaced older interfaces like Parallel ATA (PATA) due to its many advantages:

  • Data Transfer Speed: SATA offers high data transfer rates, ensuring that data flows between the storage device and the motherboard at a rapid pace.
  • Compatibility: Virtually all modern motherboards and storage devices support SATA, making it a versatile and widely compatible interface.
  • Cable Design: SATA cables are easy to work with, featuring a compact design that allows for better airflow in computer cases.
SATA Versions

It's important to note that SATA comes in different versions, such as SATA I (1.5 Gbps), SATA II (3 Gbps), and SATA III (6 Gbps). The Western Digital WD20EARX Caviar Green supports SATA III, which provides a maximum data transfer rate of 6 gigabits per second (Gbps).

Buffer Size 64 Megabytes (MB)

The buffer size of a hard disk drive, also known as the cache, plays a significant role in data transfer and access speed. The Western Digital WD20EARX Caviar Green comes with a 64-megabyte (MB) buffer.

The buffer acts as a temporary storage space for data that the drive is reading from or writing to. When you access files or run programs on your computer, the data is transferred to and from the buffer before it moves to or from the main storage platters. This process can have a notable impact on the speed and efficiency of data access.

Benefits of a Larger Buffer

A larger buffer size is generally beneficial for a few reasons:

  • Faster Data Transfer: A larger buffer can store more data, which means that the drive can read or write data more efficiently, especially for repetitive tasks.
  • Multitasking: When you're multitasking, the buffer can help store data for multiple applications, making the overall performance smoother.
  • Enhanced Performance: In situations where you're dealing with larger files or frequently accessing data, the buffer can significantly improve performance.
Real-World Application

The 64MB buffer size in the WD20EARX Caviar Green is a practical choice for users who require smooth data access. It strikes a balance between cost and performance, making it a versatile option for various tasks.

3.5 Inch and Low Profile Design

The form factor of a hard disk drive refers to its physical size and shape. The Western Digital WD20EARX Caviar Green is designed with a 3.5-inch form factor and a low profile.

3.5-Inch Form Factor

The 3.5-inch form factor is commonly used for desktop computers and external storage enclosures. It offers several advantages:

  • Larger Capacity: 3.5-inch drives can accommodate more storage platters, allowing for higher storage capacities.
  • Better Cooling: The larger size allows for better heat dissipation, which is important for maintaining the drive's temperature within a safe range.
  • Desktop Compatibility: These drives fit seamlessly into most desktop computer cases designed to accommodate 3.5-inch drives.
Low Profile Design

The low profile design of the WD20EARX Caviar Green means that it's built to be compact and slim. This design has its own set of advantages:

  • Space Savings: The drive takes up less vertical space, which is important in small form factor desktops or cases with limited space.
  • Improved Airflow: The slim design can help with airflow within the computer case, preventing overheating.
  • Compatibility: Some storage enclosures or NAS (Network Attached Storage) devices require low-profile drives, and this HDD is a suitable option for such applications.
Data Transfer Speed 6 Gigabits Per Second (Gbps)

The data transfer speed of a hard disk drive is closely linked to its interface and the technology it employs. The Western Digital WD20EARX Caviar Green, with its SATA III interface, offers a maximum data transfer rate of 6 gigabits per second (Gbps).

The Importance of Data Transfer Speed

Data transfer speed is a critical factor in determining how quickly you can read and write data to the HDD. It influences overall system performance and can make a significant difference in tasks that involve moving large files.

SATA III and 6 Gbps

The 6 Gbps data transfer rate provided by SATA III is a notable advantage for the WD20EARX Caviar Green. This speed allows the drive to operate at its full potential, ensuring that data moves swiftly between the drive and your computer's motherboard. It's particularly advantageous for:

  • Data Backup: Faster data transfer speeds mean that backup operations can be completed more quickly, reducing the time it takes to safeguard your important files.
  • Media Playback: When playing high-definition videos or audio, a drive with 6 Gbps support ensures a smooth playback experience.
  • File Transfers: Transferring large files, such as video projects or extensive data backups, becomes significantly faster with this high-speed interface.

The Western Digital WD20EARX 2TB 5.4K RPM SATA 6GBPS Hard Drive is designed to provide fast and reliable performance. With a rotation speed of 5400 RPM, the drive is able to quickly access and retrieve stored data. The SATA III (6 Gb/s) interface also allows for faster data transfer speeds, which can result in improved system performance. Additionally, the hard drive's 2 terabytes of storage capacity allows for ample space to store large amounts of data, including high-definition videos, music collections, and large numbers of photos and documents.

However, it's worth noting that the drive is not a high-performance drive and it may not be the best choice for heavy workloads or high-performance computing tasks. For those needs, consider using SSD drives.

Wide compatibility

The Western Digital WD20EARX 2TB 5.4K RPM SATA 6GBPS Hard Drive is designed to be compatible with a wide range of desktop and laptop computers. It uses the standard SATA III (6 Gb/s) interface, which is widely supported by most motherboards and computer systems. The drive can be easily installed as a secondary storage device, and it can also be used to replace an existing hard drive.

It's important to check the compatibility of this drive with your specific computer's hardware and software. Make sure the drive is compatible with your computer's operating system and that your computer has the necessary interface and power connectors to support the drive.

Additionally, it's also a good idea to check the maximum storage capacity supported by your computer's operating system and BIOS. Some operating systems and BIOS have a maximum storage capacity limit, so you'll want to ensure that the 2 terabytes of storage on this drive will be fully recognized and utilized.

General Information about this Western Digital WD20EARX
  • Manufacturer: Western Digital
  • Part Number or SKU# WD20EARX
  • Product Type: Hard Disk Drive
  • Interface: SATA 6GBPS
Technical Information for 2 TB Hard Drive
  • Capacity: 2 TB Storage
  • Form Factor: 3.5-inch
  • Cache: 64 MB
  • Spindle Speed: 5400 RPM
  • Average Seek Time: 8.9 ms
  • Drive Interface Type: SATA 6.0 GBPS
Other Information of 6GBPS Hard Disk
  • Stable Trac Technology
  • GreenPower Technology
  • IntelliSeek Technology
  • IntelliPower Technology
  • Native Command Queuing (NCQ)
  • NoTouch ramp load technology
  • Perpendicular Magnetic Recording (PMR)

In summary, the Western Digital WD20EARX Caviar Green 2TB SATA HDD is a reliable and versatile storage solution. It offers a substantial 2TB of storage capacity, a 5400 RPM speed, a SATA III interface with 6 Gbps data transfer speed, a 64MB buffer, and a 3.5-inch form factor with a low profile design. Each of these features contributes to the HDD's overall performance and suitability for various applications.

Whether you need a dependable backup solution, extra storage for your media files, or a drive for everyday computing tasks, the WD20EARX Caviar Green is designed to meet your needs. It combines Western Digital's reputable brand with a well-balanced set of specifications to provide a storage solution that many users will find both reliable and cost-effective.

Remember to consider your specific requirements when choosing a storage device, and ensure that it aligns with your intended use case and your computer's compatibility. By doing so, you can make an informed decision that best suits your storage needs.

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

About Refurbished Products

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.


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What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

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