Seagate Exos 7E8 1TB 3.5" 7200RPM SATA III 6 Gb/s Internal HDD

The Seagate ST1000NM0055 is a 1TB hard drive in the Exos 7E8 line, built for servers, storage arrays, and other systems that run day and night without a break. It fits the standard 3.5 inch bay and connects through a SATA III interface that moves data at up to 6 Gb per second, so it is easy to drop into most enterprise or advanced home setups.

Inside, a 7200 rpm spindle and a 128 MB cache keep transfers moving smoothly. Sustained throughput can reach 226 MB per second, and Seagate’s Advanced Write Cache helps maintain that speed when the workload spikes. The drive is a solid choice for applications that stream large files, crunch backups overnight, or serve virtual machines on demand.

Reliability is the headline feature. The drive is rated for a two-million-hour mean time between failures and is designed to handle up to 550 TB of writes every year while running 24 hours a day, seven days a week. That endurance makes it a dependable backbone for data centers, surveillance servers, and private clouds, as well as for smaller businesses that need enterprise-class resilience without overspending.

Power draw stays at about 5.91 watts during active use, helping administrators build dense storage arrays that stay within rack power budgets. If you are upgrading a NAS, expanding a RAID pool, or building a cold-storage tier for archival data, this drive delivers capacity, steady performance, and long-term peace of mind.

Highlights:

• 1 TB capacity in a 3.5 inch form factor
• SATA III 6 Gb/s interface for broad compatibility
• 7200 rpm spindle speed and 128 MB cache
• Up to 226 MB/s sustained transfer rate
• Advanced Write Cache for better response under load
• Rated for 24×7 operation with a 2 million-hour MTBF
• Workload capacity of up to 550 TB per year
• Approximate active power draw of 5.91 W