Seagate ST20000NM007D

Overview

The Seagate ST20000NM007D is a 3.5-inch internal hard drive designed to provide 20TB of storage capacity for servers and dense storage arrays. It connects via a SATA III 6 Gb/s interface and delivers sustained transfer speeds up to 285 MB/s. With a rotation speed of 7200 rpm and a 256 MB cache, this drive handles large files efficiently, making it suitable for streaming backups, running virtual machines, or processing analytics datasets.

Its helium-sealed enclosure reduces air friction, lowering power consumption and vibration, which is essential for data centers running multiple drives continuously. The drive supports both 512e and 4Kn sector formats, allowing seamless integration with existing controllers. Built for 24/7 operation, it offers a mean time between failures of 2.5 million hours and comes with a five-year limited warranty.

Key features

• High 20TB capacity that supports petabyte-scale storage needs without redesigning existing systems
• Fast data transfer rates up to 285 MB/s for smooth handling of large files and workloads
• Helium-sealed design reduces power consumption and vibration, improving reliability and efficiency
• Seagate PowerBalance technology optimizes energy use, ideal for racks with hundreds of drives running continuously
• Compatibility with both 512e and 4Kn sector formats simplifies integration with various storage controllers
• Engineered for continuous 24/7 operation, ensuring dependable performance in data-intensive environments
• Robust build quality supported by a 2.5 million hour MTBF and a five-year limited warranty

Key specs

• Capacity: 20TB
• Form factor: 3.5 inch
• Interface: SATA III 6 Gb/s
• Rotation speed: 7200 rpm
• Cache size: 256 MB
• Sustained transfer rate: up to 285 MB/s
• Sector formats supported: 512e and 4Kn
• Mean time between failures (MTBF): 2.5 million hours
• Warranty: 5 years limited

Connectivity and compatibility

This hard drive uses a SATA III 6 Gb/s interface, which is widely supported by most modern servers and storage arrays. Its support for both 512e and 4Kn sector formats allows it to work seamlessly with a variety of storage controllers without requiring additional converters. This flexibility makes it a practical choice for upgrading existing infrastructure or expanding cloud storage capacity.

Performance and reliability

The 7200 rpm rotation speed combined with a 256 MB cache ensures that data moves quickly and efficiently, even under heavy workloads. The helium-sealed enclosure reduces internal friction and vibration, which not only lowers power consumption but also extends the drive’s lifespan. With a mean time between failures of 2.5 million hours, this drive is built to handle continuous operation in demanding environments.

Ideal uses and environments

This model is well suited to data center operators managing large-scale cold storage, video surveillance systems that accumulate vast amounts of footage, and research teams capturing uncompressed sensor data. Its high capacity and reliable performance make it a strong choice for any setup requiring dependable, high-volume storage that runs around the clock.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

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Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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