Description
Seagate Exos X18 ST18000NM004J 18TB 3.5-Inch SAS 12Gb/s 7200RPM Enterprise Hard Drive
18TB 7.2K RPM Enterprise HDD – Exos X18 Series (Helium-Sealed)
The Seagate Exos X18 ST18000NM004J is a high-capacity 18TB 3.5-inch enterprise hard drive built for hyperscale cloud environments, enterprise servers, and mission-critical storage systems. Designed with a 12Gb/s SAS interface and helium-sealed architecture, this drive delivers maximum rack density, exceptional reliability, and optimized power efficiency.
Built for Hyperscale & Enterprise Infrastructure
Optimized for cloud data centers, enterprise RAID arrays, large-scale storage deployments, virtualization environments, and high-capacity backup systems. This model is designed specifically for systems that support 3.5-inch SAS 12Gb/s drives and is not compatible with standard SATA-only desktop systems.
Key Features
18TB Storage Capacity
3.5-Inch Form Factor
SAS 12Gb/s Interface
7200 RPM Spindle Speed
256MB Cache Buffer
Helium-Sealed Drive Design
PowerBalance™ Technology
Seagate Secure™ Support
2.5 Million Hour MTBF
5-Year Limited Warranty
Maximum Storage Efficiency
With 18TB capacity, this drive provides massive storage for millions of images, hundreds of hours of video, or extensive enterprise datasets. The helium-sealed design reduces power consumption and overall drive weight, improving rack efficiency and lowering total cost of ownership.
Enterprise-Grade Performance
The 12Gb/s SAS interface ensures high-speed data transfer, improved reliability, and enhanced command queuing for demanding workloads. The 256MB cache buffer supports rapid data processing and efficient file access. Digital environmental sensors monitor internal conditions to maintain optimal performance and long-term stability.
Built for 24×7 continuous operation, the Exos X18 delivers dependable, non-volatile data storage for enterprise-scale applications.
Ideal Applications
Hyperscale cloud platforms
Enterprise servers
High-capacity RAID storage systems
Virtualized data centers
Big data analytics platforms
Enterprise backup and archival infrastructure
Technical Specifications
Brand: Seagate
Series: Exos X18
Model: ST18000NM004J
Capacity: 18TB
Form Factor: 3.5-Inch
Interface: Serial Attached SCSI (SAS) 12Gb/s
Rotational Speed: 7200 RPM
Cache: 256MB
MTBF: 2.5 Million Hours
Drive Type: Mechanical Hard Disk Drive (HDD)
Installation Type: Internal











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