Seagate Exos X18 16TB SAS Enterprise HDD

Product Summary

The Seagate Exos X18 ST16000NM002J is an enterprise-class 16TB hard drive engineered for hyperscale data centers, cloud storage, and high-density rack servers. Built with a helium-sealed design and featuring a 12Gb/s SAS dual-port interface, it delivers consistent performance, high efficiency, and maximum reliability for demanding 24/7 workloads.

Key Features & Highlights

• Scalable Enterprise Storage: High-capacity 16TB drive optimized for data centers requiring high storage density and power efficiency.

• Helium Side-Sealed Weld Technology: Offers lower power consumption and improved thermal efficiency in high-vibration rack environments.

• FastFormat™ Technology: Supports user-configurable sector sizes (512e and 4Kn) for maximum host compatibility.

• Dual-Port SAS 12Gb/s Interface: Ensures high availability, redundancy, and seamless failover protection.

• PowerBalance™ Feature: Optimizes the Watts-per-Terabyte ratio to lower Total Cost of Ownership (TCO).

• Enterprise Reliability: Rated for 2.5 million hours MTBF and designed for continuous 24/7 operation with a 550 TB/year workload rating.

Technical Specifications

Performance & Configuration

Feature	Specification
Model Number	ST16000NM002J
Series	Seagate Exos X18
Formatted Capacity	16 TB
Interface	SAS 12Gb/s (Dual Port)
Spindle Speed	7,200 RPM
Cache (Buffer)	256 MB
Format / Sector Size	FastFormat™ (512e / 4Kn)
Max Sustained Transfer Rate (OD)	270 MB/s
Random Read / Write 4K QD16	170 / 550 IOPS
Average Latency	4.16 ms

Reliability & Data Protection

Feature	Specification
Mean Time Between Failures (MTBF)	2,500,000 hours
Annualized Failure Rate (AFR)	0.35%
Workload Rating	550 TB / year
Non-Recoverable Read Errors	1 sector per $10^{15}$ bits read
Power Choice / Power Balance	Supported
Hot-Plug Support	Yes (per SAS specification)

Power Consumption & Electrical

Mode	Typical Value
Idle Power (Average)	~5.0 W
Max Operating (Random Read/Write)	~9.5 W
Power Supply Requirements	+12V ($\pm 10\%$) / +5V ($\pm 5\%$)

Physical & Environmental

Parameter	Specification
Form Factor	3.5-inch Enterprise Hard Drive
Height (Max)	26.1 mm (1.028 in)
Width (Max)	101.85 mm (4.01 in)
Depth (Max)	147.0 mm (5.787 in)
Weight	~670 g (1.477 lb)
Operating Temperature	$5^\circ\text{C}$ to $60^\circ\text{C}$ ($41^\circ\text{F}$ to $140^\circ\text{F}$)
Acoustics (Idle/Search)	2.0 / 2.8 bels (typical)