Seagate Constellation 1TB 2.5" 7200RPM SATA 6Gb/s 64MB Cache HDD

Overview

The Seagate ST91000640NS is a 1TB internal hard drive designed for enterprise use, featuring a 2.5-inch form factor and a SATA 6Gb/s interface. It spins at 7200 RPM and includes a 64 MB cache, delivering steady data throughput and consistent access times. This drive is built to fit into dense server environments where reliability and space efficiency are critical.

Key features

• Firmware optimized for multi-drive arrays to balance performance and reliability in high-density server racks
• 15 mm thickness allows for more drives per chassis, maximizing rack space utilization
• Designed to support 24×7 operation with a mean time between failures of 1.4 million hours
• High rotational speed and cache size provide consistent access for virtualization, transactional databases, and large file storage
• Compatible with any server bay that accepts 2.5-inch SATA drives, simplifying upgrades without re-engineering

Key specs

• Capacity: 1 TB
• Form factor: 2.5-inch
• Interface: SATA 6 Gb/s
• Rotational speed: 7200 RPM
• Cache: 64 MB
• Thickness: 15 mm
• Mean time between failures: 1.4 million hours

Connectivity and compatibility

This hard drive connects via a SATA 6 Gb/s interface, ensuring compatibility with a wide range of enterprise servers and storage arrays. Its 2.5-inch size and 15 mm thickness make it suitable for dense chassis configurations commonly found in data centers. It fits seamlessly into existing server bays designed for 2.5-inch SATA drives, making it a straightforward choice for expanding storage capacity.

Performance and reliability

With a spindle speed of 7200 RPM and a 64 MB cache, this drive delivers balanced performance that supports demanding workloads such as virtualization and database management. The enterprise-grade firmware is tuned to maintain consistent performance when multiple drives operate simultaneously, reducing bottlenecks and improving overall system responsiveness. Its high mean time between failures rating ensures dependable operation in mission-critical environments.

Ideal uses and environments

This drive is well suited to data centers and enterprise environments where space is limited but high capacity and reliability are essential. It works effectively in virtualization hosts, transactional database servers, and large file repositories. Its design supports continuous operation, making it a strong choice for IT professionals who require dependable storage that fits into dense rack configurations without compromising performance.