Seagate ST1000NM0055

Overview

The Seagate ST1000NM0055 is a 1TB internal hard drive designed for enterprise and advanced home storage solutions. It features a 3.5-inch form factor and connects via a SATA III interface that supports data transfer speeds up to 6 Gb/s. With a spindle speed of 7200 rpm and a 128 MB cache, this drive delivers sustained throughput of up to 226 MB/s, making it well suited for continuous operation in servers, storage arrays, and demanding data environments.

Key features

• High-capacity 1TB storage in a standard 3.5-inch size that fits most server and desktop bays
• SATA III interface ensures broad compatibility and fast data transfer rates up to 6 Gb/s
• 7200 rpm spindle speed combined with a 128 MB cache for smooth and responsive performance
• Advanced Write Cache technology maintains consistent speed during heavy workloads
• Engineered for 24/7 operation with a 2 million-hour mean time between failures (MTBF) for exceptional reliability
• Supports a workload of up to 550 TB written per year, ideal for data-intensive applications
• Low active power consumption of approximately 5.91 watts helps reduce energy costs in dense storage setups

Key specs

• Capacity: 1 TB
• Form factor: 3.5 inch
• Interface: SATA III (6 Gb/s)
• Spindle speed: 7200 rpm
• Cache size: 128 MB
• Sustained transfer rate: up to 226 MB/s
• MTBF: 2 million hours
• Workload rating: 550 TB/year
• Active power consumption: approximately 5.91 W

Connectivity and compatibility

This hard drive uses the widely supported SATA III interface, making it compatible with most modern servers, desktop computers, NAS devices, and RAID arrays. Its 3.5-inch form factor fits standard drive bays, allowing easy integration into existing storage infrastructures without requiring adapters or special mounting hardware.

Performance and reliability

Designed for continuous operation, the drive’s 7200 rpm spindle and large cache help maintain steady data throughput even under demanding workloads. The Advanced Write Cache feature optimizes performance during bursts of activity, while the high MTBF rating and workload capacity ensure dependable service in environments that require constant uptime, such as data centers and surveillance systems.

Ideal uses and environments

This drive is a strong choice for businesses and professionals who need reliable, high-capacity storage for servers, backup systems, and virtual machine hosting. It also fits well in home offices or small business setups that demand enterprise-grade endurance without the premium cost. Whether expanding a RAID array, upgrading a NAS, or building an archival storage tier, it offers a balance of capacity, speed, and durability.

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.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

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.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, 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; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

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.

Learn more