Buffalo 12TB 3.5" Replacement Hard Drive HDD for TeraStation NAS Server

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.