Seagate Exos X18 14TB 3.5" 7200RPM SATA III Internal HDD

The Seagate ST14000NM000J is a hard drive in the Exos X18 line that stores up to 14TB in a standard 3.5 inch bay, making it an easy drop in upgrade for servers and enterprise storage shelves that need more capacity.

Designed for always on environments, it spins at 7200 revolutions per minute and connects over a SATA III 6 Gb/s interface. The drive sustains up to 270 MB per second in sequential transfers, and a 256 MB cache helps deliver consistent throughput when random requests spike.

A helium seal lowers internal turbulence, so components experience less wear, vibration stays low, and power draw drops compared with an air filled drive. Seagate PowerBalance firmware further tunes energy usage while keeping input and output predictable. These design choices lead to a mean time between failures of 2.5 million hours, reinforced by a five year limited warranty.

The drive slots naturally into hyperscale data centers, object storage clusters, backup appliances, or a NAS unit built for high density. Cloud architects, content creation teams, and research labs that capture large datasets can scale storage quickly without changing existing drive bays.

Highlights:

• 14TB storage capacity
• 7200 RPM spin speed
• 3.5 inch form factor fits standard drive bays
• SATA III 6 Gb/s interface
• 256 MB cache
• Sustained transfers up to 270 MB/s
• 2.5 million hour MTBF rating
• Helium sealed design reduces power draw and vibration
• Five year limited warranty