Seagate Exos X18 16TB 3.5" 7200RPM SAS III 12 Gb/s Internal HDD

The Seagate ST16000NM004J is a 3.5" internal hard drive that supplies 16TB of storage based on conventional magnetic recording. Built for continuous operation, it connects through a SAS III interface rated at 12 Gb/s and spins at 7200 rpm, which allows sustained data transfer up to 261 MB/s.

A 256MB cache teams with PowerBalance to manage power draw so the drive can maintain throughput under heavy load without wasting energy. For administrators who need even tighter efficiency, PowerChoice enables configurable idle states across large drive populations.

The drive is sealed with helium, a choice that reduces internal turbulence and lowers friction on the platters. This design contributes to a 2.5 million hour mean time between failures and helps keep vibration in check when drives are densely packed in a rack. Integrated digital sensors report temperature and other metrics, making it easier to spot issues before they affect uptime.

Compatibility with both 512e and 4Kn sector formats simplifies deployment in mixed environments. Whether you are scaling a cloud data center, expanding a hyperscale cluster for analytics, or creating a high density RAID system for video archives, the Exos X18 series delivers capacity, speed, and reliability that fit demanding workloads.

• 16TB capacity that uses conventional magnetic recording for predictable performance
• SAS III interface at 12 Gb/s with sustained data transfer up to 261 MB/s
• 7200 rpm spindle speed and average latency of 4.16 ms support responsive access
• 256MB cache plus PowerBalance and PowerChoice features for power efficient operation
• Helium sealed design with 2.5 million hour MTBF rating for long term reliability