Seagate ST91000640NS Server Hard Drive 2.5 Inch 1TB 7.2K RPM 6Gb/s SATA – Refurb

The Seagate ST91000640NS is a 1TB 2.5-inch enterprise-grade SATA hard drive designed for dependable 24×7 operation. With a 7200 RPM spindle speed, 64MB cache, and stable sustained transfer rates, it delivers reliable performance for servers, storage arrays, and professional IT environments. Built with enterprise reliability in mind, it offers robust endurance and long-term consistency for mission-critical workloads.

Engineered for environments that demand constant uptime, this drive combines high efficiency with strong durability. Its low latency and solid vibration tolerance make it suitable for dense server chassis or mobile enterprise systems. Whether used for storage expansion, backups, or replacing ageing drives, the ST91000640NS provides dependable, predictable performance.

✔ Key Features & Benefits
✔ Enterprise-Class Storage – Optimised for 24×7 workloads and continuous operation.
✔ SATA 6Gb/s Interface – Ensures stable, high-speed connectivity.
✔ Reliable Performance – 7200 RPM spindle speed with 64MB cache for smooth throughput.
✔ High Durability – Rated for 1.4M hours MTBF with low annual failure rate.
✔ Efficient Design – Lower power consumption suited for enterprise and mobile deployments.

✔ Ideal Uses
✔ Suitable for enterprise servers requiring dependable 2.5-inch storage.
✔ Reliable choice for backup, archival, or secondary storage roles.
✔ Works well in RAID arrays requiring consistent performance.
✔ Ideal for storage expansion in business laptops, SFF servers, or embedded systems.

✔ Specifications
✔ Condition: Refurb device with minor scratches and scuffs. Device has been extensively tested and is fully functional.
✔ Form Factor: 2.5-inch
✔ Brand: Seagate
✔ Model: ST91000640NS
✔ Capacity: 1TB
✔ Interface: SATA 6Gb/s
✔ Spindle Speed: 7200 RPM
✔ Cache: 64MB
✔ Average Latency: 4.16 ms
✔ Seek Time: 8.5 ms (read), 9.5 ms (write)
✔ MTBF: 1.4 million hours
✔ Reliability (AFR): 0.62%
✔ Non-Recoverable Read Errors: 1 per 10¹⁵ bits read
✔ Power-On Hours per Year: 8760
✔ RV Tolerance: 16 rad/s²
✔ Acoustics: 2.2 bels (idle), 2.8 bels (seek)
✔ Dimensions: 100.45 × 70.10 × 15.00 mm
✔ Weight: 200 g

Warranty
✔ 3 Month Warranty

What’s in the Box
✔ Hard Drive Only