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

The Buffalo OP-HD4.0H2U-5Y is a 4TB hard drive built to replace or expand the storage inside a TeraStation NAS server without disrupting daily operations. It installs in the 3.5 inch bay that the TeraStation already provides, so you can restore capacity or add more space in minutes.

This drive supports hot-swap operation, which means the array keeps serving data while you pull a failing disk and slide this one into place. Its SATA 6 Gbps interface keeps transfers moving smoothly, allowing your users to open large projects, back up critical databases, or stream media without noticeable slowdowns.

IT administrators who manage branch offices, creative teams that work with high-resolution assets, and small businesses that run continuous backups will appreciate the dependability of a component designed specifically for TeraStation hardware. The housing measures 6.8 × 4.2 × 1.1 inches and weighs 1.7 pounds, offering a size and heft that feel sturdy yet still fit neatly inside the server chassis.

Compatible with TeraStation models TS51210RH, TS51220RH, and TS71210RH, this drive lets you standardize on one part number for replacements across your entire Buffalo fleet, simplifying inventory and maintenance planning.

• 4TB storage capacity for growing file libraries and backup sets
• 3.5 inch form factor fits TeraStation NAS servers
• Hot-swap capability allows drive replacement without shutting down the system
• SATA 6 Gbps interface that maintains consistent data throughput
• Compatible with TeraStation TS51210RH, TS51220RH, and TS71210RH models
• Compact housing measuring 6.8 × 4.2 × 1.1 inches
• Sturdy construction weighing 1.7 pounds for dependable service life