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Buffalo 4TB 3.5" Replacement Hard Drive HDD for TeraStation NAS Server

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Product details

Management number 241242931 Release Date 2026/07/17 List Price $125.65 Model Number 241242931
Category
Overview

The Buffalo OP-HD4.0H2U-5Y is a 4TB replacement hard drive designed specifically for TeraStation NAS servers. It fits into the 3.5-inch drive bays of compatible models, allowing you to expand or restore storage capacity quickly without interrupting your network operations. With a SATA 6 Gbps interface and hot-swap support, this drive ensures smooth data transfers and continuous availability, making it a practical choice for businesses that rely on uninterrupted access to their files and backups.

Key features
  • Hot-swap capability enables drive replacement without powering down the NAS, minimizing downtime.
  • SATA 6 Gbps interface supports fast and consistent data throughput for large file handling and backups.
  • Designed to fit seamlessly into TeraStation NAS servers, simplifying upgrades and maintenance.
  • Sturdy construction with a compact form factor that balances durability and space efficiency.
  • Compatible with multiple TeraStation models, allowing standardized replacement parts across your network.
Key specs
  • Storage capacity: 4 TB
  • Form factor: 3.5 inch
  • Interface: SATA 6 Gbps
  • Dimensions: 6.8 × 4.2 × 1.1 inches
  • Weight: 1.7 pounds
  • Compatible models: TeraStation TS51210RH, TS51220RH, TS71210RH
Compatibility and installation

This hard drive is engineered to work exclusively with select Buffalo TeraStation NAS servers, ensuring a perfect fit and reliable operation. Its hot-swap design means IT administrators can replace or add drives without shutting down the system, which is essential for maintaining continuous data access in busy environments. The drive’s dimensions and weight are optimized to fit securely within the server chassis, making installation straightforward and hassle-free.

Ideal uses and environments

The OP-HD4.0H2U-5Y is well suited for small businesses, branch offices, and creative teams that require dependable storage expansion or replacement options. It supports workflows involving large media files, continuous backups, and database storage by maintaining steady data transfer speeds and minimizing service interruptions. This drive is a strong choice for users who need to keep their TeraStation NAS running smoothly while managing growing data demands.


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