Buffalo OP-HD20.0N

Overview

The Buffalo OP-HD20.0N is a 20 TB replacement hard drive designed specifically for TeraStation network-attached storage arrays. It fits into a 3.5-inch bay on various TeraStation models, including 3010, 3020, 5010, 5020, WS5020, 6400, 5420, and 5820. With a SATA 6 Gb/s interface supporting transfer speeds up to 600 MB/s, this drive enables fast data movement for large files such as video projects, virtual machine images, and backups. Its hot-swap capability allows you to add or replace the drive without shutting down the system, ensuring continuous access to shared folders and backups across your network.

Key features

• Large 20 TB capacity provides ample space for extensive datasets, media libraries, and archives.
• Hot-swap design allows quick installation or replacement without interrupting network access or system uptime.
• SATA 6 Gb/s interface supports high transfer rates, reducing wait times when handling large files.
• Purpose-built compatibility with a wide range of Buffalo TeraStation models ensures seamless integration.
• Three-year Buffalo warranty aligns with typical TeraStation support cycles, offering reliable coverage.

Key specs

• Capacity: 20 TB
• Form factor: 3.5 inch
• Interface: SATA 6 Gb per second
• Maximum transfer rate: up to 600 MB per second
• Compatible models: Buffalo TeraStation 3010, 3020, 5010, 5020, WS5020, 6400, 5420, 5820
• Warranty: 3 years

Compatibility and installation

This replacement drive is engineered to fit directly into the 3.5-inch bays of supported TeraStation models, making it a straightforward upgrade or replacement option. The hot-swap feature means you can install or swap the drive while the NAS remains powered on and accessible, minimizing downtime and maintaining continuous data availability for all users on the network.

Ideal uses and environments

The OP-HD20.0N is well suited for creative professionals managing high-resolution media files, IT teams maintaining reliable backups, and advanced home users organizing large media collections. Its large capacity and fast interface help keep data centralized and accessible, supporting workflows that demand both storage space and performance without requiring a full system upgrade.

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.

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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.

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