Seagate ST31000520AS 1TB Hard Drive
If you need a large quantity of ST31000520AS product - call us through our toll-free number at (800) 675 5044 or request a quote at live chat and our sales manager will contact you shortly.
Looking for assistance? Connect with one of our experts
+1 (800) 675 5044 (Toll-Free)
FREE Shipping.
1 of 2

Seagate ST31000520AS 1TB Hard Drive 5.9K RPM SATA Form Refurbished

Availability: In Stock
Part Number#: ST31000520AS
List Price was: $603.03
Your Price:
You Save: $404.03 (67% off)



Short Description:
ST31000520AS Barracuda 1TB (Terabytes) 5900 Revolutions Per Minute (RPM) Serial Advanced Technology Attachment (SATA) 7-Pin 3.5inch Form Factor 32MB Buffer Internal Low Power Hard Disk Drive | Made by Seagate | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Product Overview of ST31000520AS Seagate Hard Drive

The ST31000520AS Seagate Barracuda is a 1TB internal hard drive that operates at 5,900 RPM. This SATA hard drive is designed to provide high performance and reliability for a range of computing needs, including gaming, multimedia, and data storage. In this article, we will provide a detailed overview of the ST31000520AS Seagate Barracuda, including its key features, specifications, and performance benchmarks.

In the realm of data storage solutions, the Seagate ST31000520AS Barracuda stands tall as a 1TB (Terabyte) Hard Disk Drive (HDD) designed to cater to various storage needs. This detailed exploration aims to demystify the key features and technical specifications that make the ST31000520AS a reliable choice for users seeking internal storage solutions.

Key Specifications of the 1TB HDDCapacity: 1TB

At the heart of the Seagate ST31000520AS is its substantial 1TB storage capacity. Terabytes have become the gold standard in the digital era, offering ample space for storing a plethora of files, ranging from documents and multimedia to software installations.

  • The Seagate ST31000520AS boasts a substantial storage capacity of 1 Terabyte (TB). This means it can accommodate a vast amount of data, making it suitable for both personal and professional use.
Spindle Speed: 5900 RPM

The Barracuda's impressive 5900 Revolutions Per Minute (RPM) spindle speed ensures swift data access. This rotational speed is a vital metric influencing the drive's performance, contributing to quick file retrieval and efficient data transfers.

SATA Connection: Serial Advanced Technology Attachment

The Seagate ST31000520AS employs Serial Advanced Technology Attachment (SATA), a popular interface for connecting storage devices to a motherboard. The 7-pin SATA connection ensures a reliable and high-speed data transfer between the HDD and other components of the computing system.

  • The ST31000520AS Seagate Barracuda uses the SATA interface, which provides faster data transfer speeds compared to the older IDE interface. SATA is also a more flexible interface, allowing for longer cable lengths and simpler cabling.
Form Factor: 3.5-inch

The physical size of the hard drive is encapsulated in the term "Form Factor." The Seagate Barracuda adheres to the 3.5-inch form factor, making it suitable for desktop computers where larger drives can be accommodated. This form factor is a standard in many desktop configurations, ensuring compatibility.

Buffer: 32MB

The ST31000520AS Barracuda incorporates a 32MB buffer, also known as a cache. This buffer serves as temporary storage, enhancing the drive's performance by facilitating quicker access to frequently used data.

Power Efficiency: Internal Low Power

A notable feature of the Seagate ST31000520AS is its internal low-power design. This characteristic contributes to energy efficiency, making the HDD an environmentally friendly option while also potentially reducing operating costs for users.

Performance MetricsDrive Transfer Rate: 300 MBPS (External)

The drive's external transfer rate is a crucial performance metric. With an impressive 300 Megabytes Per Second (MBPS), the ST31000520AS ensures swift data exchange between the hard drive and external devices, making it suitable for tasks demanding high-speed data transfer.

Internal Data Rate: 95 MBPS

Internally, the Seagate Barracuda maintains a robust data transfer rate of 95 MBPS. This metric is pivotal for tasks that involve reading or writing data within the drive itself, providing a seamless user experience for activities such as gaming, media playback, and file management.

Average Latency: 5.5 MS

Latency, the time it takes for the drive to respond to a data request, is a critical performance factor. The Seagate ST31000520AS boasts an average latency of 5.5 milliseconds, ensuring minimal delays and quick access to data, enhancing overall system responsiveness.

Expansion and ConnectivityInterfaces: 1 x Serial ATA-300 - 7 pin Serial ATA

The Seagate ST31000520AS features a single interface – 1 x Serial ATA-300 with a 7-pin Serial ATA connector. This standardized interface ensures compatibility with a wide range of motherboards and expansion cards, simplifying the integration of the Barracuda into diverse computing setups.

Compatible Bays: 1 x Internal - 3.5 Inches

The Barracuda is designed to fit seamlessly into standard internal bays with a 3.5-inch form factor. This compatibility ensures that users can easily install the Seagate ST31000520AS in desktop systems equipped with the standard 3.5-inch drive bay.

General Information about this Seagate ST31000520AS
  • Manufacturer: Seagate
  • Part Number or SKU# ST4000NM0023
  • Product Type: Hard Disk Drive (HDD)
  • Sub-Type: SATA-II
Technical Information for SATA-II HDD
  • Capacity: 1TB storage
  • Cache: 32MB
  • Interfaces: 1 x Serial ATA-300 - 7 pin Serial ATA
  • Form Factor: 3.5-inch
  • Drive Transfer Rate: 300 MBPS external
  • Internal Data Rate: 95 MBPS
  • Average Latency: 5.5 MS
  • Spindle Speed: 5900 RPM

In summary, the ST31000520AS Seagate Barracuda is a reliable and efficient hard drive for a range of computing needs. Its SATA interface, 5,900 RPM spindle speed, and large 32MB cache make it a good choice for data storage and general computing tasks. Its quiet operation and energy efficiency features also make it a more environmentally friendly choice for home and office environments. With its strong performance and solid specifications, the ST31000520AS Seagate Barracuda is a good choice for anyone in need of a high-quality internal hard drive.

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.


Please choose your location for calculate shipping cost.


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.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

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:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.