Buffalo OP-HD12.0H2U-5Y

Overview

The Buffalo OP-HD12.0H2U-5Y is a 12TB replacement hard drive designed specifically for TeraStation NAS servers, including models 51210RH, 51220RH, and 71210RH. This 3.5-inch drive fits directly into existing trays without the need for tools or additional brackets, enabling quick installation. With a 6 Gb/s SATA interface, it supports fast data transfers essential for handling large files such as 4K video, CAD libraries, and backup archives, making it a practical choice for environments that require reliable, continuous storage.

Key features

• 12TB capacity offers ample space for extensive projects and long-term data storage.
• Tool-free installation into compatible TeraStation rackmount trays simplifies drive replacement or expansion.
• Hot swap capability allows you to replace or add drives without powering down the NAS, minimizing downtime.
• 6 Gb/s SATA interface ensures quick file transfers and efficient RAID rebuilds.
• Built with enterprise-grade components to withstand continuous operation in demanding office or studio settings.
• Backed by a five-year warranty, providing confidence in long-term reliability and support.

Key specs

• Capacity: 12 TB
• Form factor: 3.5 inch
• Interface: SATA 6 Gb/s
• Compatible models: Buffalo TeraStation 51210RH, 51220RH, 71210RH
• Hot swap support: Yes
• Warranty: 5 years

Connectivity and compatibility

This hard drive is engineered to integrate seamlessly with Buffalo TeraStation rackmount NAS servers, fitting into the existing drive trays without modification. The SATA 6 Gb/s interface supports high-speed data transfer, which is critical for maintaining performance in multi-user environments and during RAID rebuilds. Its hot swap feature ensures that storage maintenance or upgrades can be performed without interrupting network access or data availability.

Ideal uses and environments

The OP-HD12.0H2U-5Y is well suited for small to medium-sized businesses, creative studios, and IT departments that rely on TeraStation NAS servers for file sharing, virtual machine hosting, or surveillance data storage. Its large capacity and enterprise-grade build make it a strong choice for setups where uptime and data integrity are essential. This drive supports workflows that involve large multimedia files, complex engineering data, or scheduled backups that must complete reliably overnight.

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, 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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