Western Digital WD40EZRZ 4TB Hard Disk Drive
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Western Digital WD40EZRZ Blue 4TB 5.4K RPM Hard Drive SATA Bulk

Availability: In Stock
Part Number#: WD40EZRZ
List Price was: $324.24
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Short Description:
WD40EZRZ Blue 4 Terabytes (TB) 5400 Revolutions Per Minute (RPM) Serial Advanced Technology Attachment (SATA) 6 Gigabits Per Second (GBPS) 64 Megabytes (MB) Buffer 3.5Inch Large Form Factor (LFF) Internal Desktop Hard Disk Drive | Made by Western Digital | New Bulk Pack
Western Digital
Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
30 Days

Product Specification

The Western Digital WD40EZRZ Blue is a high-capacity hard drive that offers excellent storage capabilities. It has a storage capacity of 4TB, making it an ideal storage solution for consumers who require large amounts of storage space for their digital content. This hard drive uses a SATA interface with a data transfer rate of 6Gbps and has a buffer size of 64MB, which enhances its performance.

WD40EZRZ Blue 4TB HDD is part of the WD Blue series, which is known for its balance of performance and affordability. Western Digital, often referred to as WD, is a renowned name in the storage industry, offering a wide range of hard drives and solid-state drives (SSDs) to meet various storage needs.

The WD40EZRZ Blue is designed for desktop computers and is an ideal choice for users looking to expand their storage capacity or replace their existing hard drive with a larger one. It is known for its reliability, making it suitable for both everyday computing tasks and storing large amounts of data, such as photos, videos, documents, and more.


The WD40EZRZ Blue hard drive offers a massive storage capacity of 4TB, which is ideal for consumers who require high storage capacity for their digital content. The 4TB storage capacity is enough to store several movies, music, documents, games, and other digital content without running out of storage space. The high storage capacity of this hard drive makes it ideal for users who require high storage space for their desktops, workstations, and gaming systems.

Benefits of Choosing the WD40EZRZ Blue

Now that we've discussed the individual features of the WD40EZRZ Blue, let's explore the overall benefits of choosing this HDD for your desktop system:

  • Ample Storage: The 4TB capacity provides an abundance of space for all your files, making it an excellent choice for users with diverse storage needs.
  • Cost-Effective: The WD40EZRZ Blue offers a cost-effective storage solution for those who need a significant amount of space without breaking the bank.
  • Reliable Brand: Western Digital is a well-established brand known for producing dependable storage devices, offering peace of mind to users.
  • Versatile Compatibility: The drive's 6Gbps SATA interface ensures compatibility with a wide range of desktop computers, both old and new.
  • Efficient Performance: While it may not be the fastest HDD on the market, the 5400 RPM spindle speed, 64MB buffer, and SATA interface work together to provide efficient and reliable performance for everyday tasks.
  • Quiet Operation: The drive's lower spindle speed contributes to a quieter computing experience, which can be appreciated in quieter environments.
  • Data Security: With ample storage capacity, you can easily back up and archive important data, ensuring that your files are safe and easily accessible when needed.
  • Multitasking Capabilities: The 64MB buffer enhances the drive's multitasking capabilities, allowing you to run multiple applications and tasks without experiencing significant performance drops.
  • Easy Installation: The 3.5-inch LFF is a standard form factor for desktop hard drives, making installation straightforward in most desktop computer cases.
  • Energy Efficiency: The lower spindle speed leads to reduced power consumption, making the drive more energy-efficient and environmentally friendly.

Spindle Speed

The spindle speed of a hard drive refers to the number of revolutions per minute (RPM) of its spinning disk. The WD40EZRZ Blue hard drive has a spindle speed of 5,400 RPM, which is a relatively low speed for a hard drive of this size. The low spindle speed may not be suitable for users who require high performance and fast data access. However, it is still an excellent option for users who require high storage capacity for their digital content.


The WD40EZRZ Blue hard drive uses a Serial ATA (SATA) interface, which is the most common interface used in consumer-level hard drives. The SATA interface offers a data transfer rate of 6Gbps, which is fast enough for most users. The fast data transfer rate ensures that users can transfer data to and from the hard drive quickly and efficiently.

Buffer Size

The buffer size of a hard drive refers to the amount of memory used to temporarily store data before it is written to or read from the disk. The WD40EZRZ Blue hard drive has a buffer size of 64MB, which is a relatively large buffer size for a hard drive of this size. The large buffer size enhances the hard drive's performance, as it allows data to be temporarily stored before being written to or read from the disk, resulting in faster data transfer rates and faster access times.

Performance and Reliability

The performance of a hard drive depends on various factors, including RPM, buffer size, and the quality of the components used. The Western Digital WD40EZRZ Blue offers a balanced performance that is well-suited for most desktop computing tasks.

  • Data Transfer Speed: The combination of a 5400 RPM motor and a 64MB buffer allows for efficient data transfer. While it may not match the speed of high-end 7200 RPM drives, it is more than adequate for everyday use. Users can expect seamless performance when working with documents, spreadsheets, and other common tasks.
  • Multimedia Playback: This hard drive is well-suited for multimedia playback. It can handle the playback of high-definition videos and audio files without stuttering or buffering issues. It's also a good choice for storing your media library.
  • Gaming: While not optimized for gaming like solid-state drives (SSDs), the WD40EZRZ Blue still provides reasonable performance for gaming. Game load times might be slightly longer compared to SSDs, but once the game is loaded, it should run smoothly.
  • Reliability: Western Digital is known for producing reliable storage solutions, and the WD40EZRZ Blue is no exception. It is built to last and is backed by WD's reputation for quality. The drive is designed for 24/7 operation, making it a dependable choice for users who require continuous access to their data.
  • Heat Management: The 3.5-inch form factor allows for efficient heat dissipation, which is important for maintaining the drive's performance and longevity. Proper heat management is especially crucial in desktop computers with limited airflow.
  • Noise Level: The WD40EZRZ Blue operates quietly, which is important for users who prefer a noise-free computing experience. The drive's noise levels are well within acceptable limits and won't be a distraction.

The WD40EZRZ Blue hard drive's performance is a result of its combination of key specifications, such as its high storage capacity, SATA interface, and buffer size. The high storage capacity allows users to store large amounts of digital content, while the SATA interface provides a fast data transfer rate. The large buffer size ensures that data can be temporarily stored before being written to or read from the disk, resulting in faster data transfer rates and faster access times.

Other factors, such as the processor speed, amount of memory, and system configuration, can also impact performance. Therefore, it is essential to consider these factors when evaluating the performance of a computer system.

The WD40EZRZ Blue hard drive is designed for reliability, with a mean time between failures (MTBF) of up to 1 million hours. This means that the hard drive is expected to function reliably for a long time, making it a suitable option for users who require a long-lasting storage solution for their digital content.

Specification about the Western Digital WD40EZRZ

  • Manufacturer: Western Digital
  • Part Number or SKU# WD40EZRZ
  • Type: Hard Disk Drive
  • HDD Type: SATA 6GBPS
  • Product Line: WD Blue

Technical Information for 4TB Hard Drive

  • Storage Capacity: 4TB 5.4K RPM HDD
  • Rotational Speed: 5.4K RPM
  • Drive Interface: SATA
  • Drive Interface Standard: 6GBPS
  • Buffer: 64 MB

In summary, the Western Digital WD40EZRZ Blue 4TB 5400 RPM SATA HDD is a reliable and cost-effective storage solution for desktop computer users. It offers a generous 4TB storage capacity, which is perfect for those with substantial data storage needs, whether for work, multimedia, or gaming. The combination of a 5400 RPM motor, SATA 6 Gbps interface, and a 64MB buffer ensures efficient data transfer and reliability for everyday computing tasks.

While it may not match the speed of high-performance hard drives or solid-state drives (SSDs), the WD40EZRZ Blue strikes a balance between performance and affordability, making it an excellent choice for budget-conscious users. Its quiet operation and 3.5-inch form factor contribute to a seamless and reliable computing experience.

Western Digital
Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
30 Days

About New Bulk Pack Products

New Bulk Pack products come with clamshell boxes and do not have any manufacturer warranty. Many times manufacturers disassemble whole units to use parts or pulled from a new system. Typically, this product doesn't come with software or instructions unless indicated and no Manufacturer’s genuine warranty. You can take note these are not brand new products.

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

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.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

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).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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Shipping Options and Estimated Delivery Time

UPS Shipping Options:

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UPS® First Overnight - Saturday
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FedEx Shipping Options:

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FedEx Priority Overnight®
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FedEx First Overnight®
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Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

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