Buffalo 4TB Replacement Hard Drive for TeraStation & LinkStation

The Buffalo OP-HD4.0BST-3Y is a 4TB internal hard drive created specifically to replace or expand the storage inside compatible Buffalo LinkStation and TeraStation enclosures. By matching the original hardware specifications, it restores lost capacity or adds valuable headroom without forcing you to rebuild your entire array.

Thanks to a SATA 3 Gb/s interface, the drive moves data at a pace that keeps everyday network tasks responsive. You can stream large media files to your living-room player, back up workstations in a small office, or share project folders across a creative team without the performance dips that often come with generic drives.

Installation is straightforward. The hot-swap design lets you slide the drive into an open bay or replace a failed unit while the NAS stays online, so users keep working and media keeps streaming. There is no need for lengthy shutdowns or complicated manual rebuilds.

Compatibility is guaranteed with LinkStation models 220, 420, and 720, as well as TeraStation TS1200D and TS1400D. If you manage one of these systems, the drive offers a worry-free way to keep your RAID healthy and your data accessible.

• 4TB capacity for growing media libraries, backups, and shared files
• SATA 3 Gb/s interface delivers reliable network performance
• Hot-swap capability allows drive changes without downtime
• Works with LinkStation 220, 420, and 720
• Works with TeraStation TS1200D and TS1400D
• Designed as an internal drive for Buffalo NAS environments