Seagate Enterprise Capacity 4TB 3.5" 7200RPM SAS 6 Gb/s Internal HDD

Overview

The Seagate ST4000NM0034 is a 3.5-inch internal hard drive designed for enterprise servers and storage systems that require reliable, high-capacity storage. Offering 4TB of space, it fits standard SAS backplanes and supports data transfer speeds up to 226 MB/s thanks to its 7200 rpm spindle speed and 128 MB cache. This drive is built to handle demanding workloads in data centers, RAID arrays, and continuous operation environments.

Key features

• High-capacity 4TB storage ideal for expanding server or NAS storage pools without frequent upgrades
• SAS interface compatible with both 12 Gb/s and 6 Gb/s systems, ensuring flexible integration with existing infrastructure
• 7200 rpm spindle speed combined with a large 128 MB cache supports sustained data transfers up to 226 MB/s, accelerating backup and database tasks
• Designed for 24×7 operation with a 550 TB annual workload rating, making it suitable for continuous data center use
• Dual onboard processors and rotational vibration sensors maintain consistent performance in multi-drive enclosures, reducing errors and downtime
• PowerChoice technology enables administrators to reduce power consumption and heat output during low-demand periods, lowering operational costs

Key specs

• Capacity: 4 TB
• Form factor: 3.5 inch
• Interface: SAS 6 Gb/s (backward compatible with 12 Gb/s)
• Spindle speed: 7200 rpm
• Cache size: 128 MB
• Sustained transfer rate: up to 226 MB/s
• Mean time between failures (MTBF): 2 million hours
• Annual workload limit: 550 TB written
• Annualized failure rate: 0.44%

Connectivity and compatibility

This hard drive uses a SAS interface that supports 6 Gb/s speeds and is backward compatible with 12 Gb/s systems, allowing it to integrate smoothly into a wide range of enterprise storage environments. It fits standard 3.5-inch drive bays and is optimized for multi-drive racks, making it a strong choice for RAID configurations and scale-out file servers.

Performance and reliability

With dual processors and built-in rotational vibration sensors, the drive maintains stable performance even in dense multi-drive setups. Its 2 million hours MTBF and low annual failure rate provide confidence for mission-critical applications. The PowerChoice firmware helps balance power efficiency with performance, reducing energy use during off-peak times without sacrificing responsiveness.

Ideal uses and environments

This model is well suited to enterprise data centers, virtual machine storage, backup targets, and private cloud deployments that demand consistent uptime and high data throughput. It also supports video surveillance and content streaming systems that require reliable, long-term storage. System builders and IT professionals will find it a dependable option for expanding storage capacity while managing power and cooling costs.