BUFFALO 4 TB Spare Replacement Hard Drive for TeraStation 3000 & 5000 Series (OP-HD4.0S-3Y)

The BUFFALO 4 TB Spare Replacement Hard Drive for TeraStation 3000 & 5000 Series (OP-HD4.0S-3Y) is engineered to keep your business storage running smoothly with dependable capacity and seamless NAS integration. Built to fit Buffalo’s TeraStation 3000 and TeraStation 5000 series, this 4 TB SATA drive is designed as a reliable spare or replacement in demanding network-attached storage environments. Whether you need extra headroom for growing archives, faster backups, or a ready spare to minimize downtime, this drive delivers consistent performance, robust reliability, and simplified maintenance for small to mid-size teams. With a focus on NAS-optimized operation, it helps protect critical data and maintain uptime, so your team can access files, collaborate, and share media without interruption. From households to small offices and remote work setups, this Buffalo spare drive brings peace of mind through scalable capacity, efficient data handling, and compatibility with established TeraStation ecosystems.

• Official spare replacement for TeraStation 3000 & 5000 – Designed to match Buffalo’s NAS ecosystem, ensuring reliable fit, performance, and compatibility with your existing storage array.
• 4 TB capacity – Ample room for backups, shared folders, media libraries, and archival data, enabling longer retention without frequent expansion.
• SATA interface – Central to fast, stable data transfer and seamless integration with modern NAS controllers, delivering quick restore and access times.
• NAS-optimized reliability – Built to handle continuous operation in a networked storage environment, with firmware and hardware designed for long-term NAS workloads.
• 3-year warranty – Backed by Buffalo’s quality assurance, giving you confidence in durability and support when you need it most.

Technical Details of BUFFALO 4 TB Spare Replacement Hard Drive for TeraStation 3000 & 5000 Series (OP-HD4.0S-3Y)

• Model: OP-HD4.0S-3Y
• Capacity: 4 TB
• Drive Interface: SATA (SATA III compatible, 6 Gb/s)
• Drive Form Factor: 3.5-inch internal hard disk drive (HDD)
• Compatibility: Buffalo TeraStation 3000 and TeraStation 5000 series
• Purpose: Spare/replacement drive engineered for NAS environments
• Warranty: 3-year limited warranty

how to install BUFFALO 4 TB Spare Replacement Hard Drive

Installing the BUFFALO 4 TB spare drive in a TeraStation NAS is straightforward and designed to minimize downtime. Follow these general steps to ensure a safe, effective replacement or addition. Always power down and unplug the NAS before handling internal components, and consult your specific TeraStation user manual for any model-specific instructions.

• Power down and unplug the TeraStation unit. Disconnect from power and the network to prevent any accidental startup during installation.
• Open the NAS drive bay or drive tray access panel. If your model uses hot-swap trays, release the latch or lever to remove the empty drive tray.
• Insert the BUFFALO 4 TB OP-HD4.0S-3Y into the empty bay or tray. Align connectors carefully and slide the tray back until it seats securely.
• Reconnect the drive tray mechanism (if applicable). Close the drive bay door or panel and ensure it latches properly.
• Power on the NAS and access the TeraStation management interface. Initialize or re-verify the spare drive as a replacement or rebuild option, depending on your RAID configuration and recovery plan.
• Run any required rebuild or parity synchronization if your TeraStation is configured with RAID. Monitor the NAS status through the admin UI to confirm the rebuild completes successfully.

Frequently asked questions

• Q: Is the OP-HD4.0S-3Y compatible with both TeraStation 3000 and 5000 series?
  A: Yes. This 4 TB spare replacement drive is designed to fit Buffalo’s TeraStation 3000 and 5000 series NAS appliances, making it suitable as a ready spare or replacement in supported configurations.
• Q: What is the purpose of a spare replacement drive in a NAS?
  A: A spare replacement drive is kept on-hand to quickly replace a failed drive or to serve as a hot spare in RAID configurations, helping minimize downtime and protect data integrity in your NAS ecosystem.
• Q: What kind of data transfer speed can I expect with this drive?
  A: The drive uses a SATA interface (6 Gb/s) common to modern NAS deployments. Real-world speed depends on your RAID level, NAS processor, network performance, and workload characteristics, but the drive is optimized for reliable NAS access and steady data throughput.
• Q: Does this drive come with a warranty?
  A: Yes. The OP-HD4.0S-3Y carries a 3-year limited warranty, reflecting Buffalo’s commitment to reliability and long-term support for business-grade storage needs.
• Q: Is this drive suitable as a primary drive for a TeraStation?
  A: It is designed as a spare/replacement option for TeraStation 3000 and 5000 series arrays. For primary workloads, verify compatibility with your specific RAID configuration and ensure you follow Buffalo’s recommended deployment guidelines.