Seagate Exos X18 18TB Enterprise HDD With 550TB/Yr Workload, 2.5M MTBF, 270MB/s Transfer Rate, Helium-Sealed 3.5in Design, PowerChoice, PowerBalance, And AES-256 Seagate Secure Protection ~ ST18000NM000J

Expert FeaturesMassive 18TB Enterprise-Grade Capacity : Built for hyperscale and data-intensive infrastructures, the Exos X18 packs 18TB of high-density storage into a 3.5-inch form factor—delivering top-tier rack space efficiency for analytics, cold storage, and large-scale deployments.Engineered for Hyperscale Scalability : Designed for big data environments and cloud architectures, it meets hyperscale demands with predictable performance, support for dense storage arrays, and architecture-optimized throughput.Advanced Caching for Low-Latency Response : Enhanced caching technology ensures consistent, repeatable read/write behavior with stable latency—crucial for enterprise workloads that require dependable performance at scale.24×7 Operation with High Workload Rating : Supports workloads up to 550TB per year, delivering continuous operation for mission-critical applications, databases, and high-availability deployments.Helium-Sealed Power Efficiency : Built with helium-filled technology to reduce turbulence, power draw, and heat output. The result: cooler operation, higher reliability, and lower total cost of ownership (TCO).PowerChoice & PowerBalance Optimization : Fine-tune performance and energy consumption with customizable power profiles. These technologies intelligently adjust active and idle power states without sacrificing stability.Enterprise-Class Reliability : Achieves a 2.5 million-hour MTBF rating with robust error recovery and vibration resistance—ideal for multi-drive servers, enterprise racks, and concurrent workloads.Fast Sustained Data Throughput : Up to 270MB/s sustained transfer rate ensures smooth data ingestion and retrieval, optimized for heavy workloads, batch processing, and high-speed backup tasks.Seagate Secure Hardware Encryption : AES-256 hardware-based encryption, password protection, and secure erase features safeguard sensitive data and ensure compliance with regulatory requirements.Built for Mission-Critical Environments : Ideal for enterprise storage servers, RAID arrays, SAN/NAS systems, cloud data centers, high-capacity backup vaults, and analytics-driven infrastructures.Expert SpecsCategorySpecificationProduct NameSeagate Exos X18 Enterprise HDDModel NumberST18000NM000JCapacity18TBForm Factor3.5-inchWorkload RatingUp To 550TB Per YearMTBF2.5 Million HoursSustained Transfer RateUp To 270MB/sCaching TechnologyEnhanced Write CachingDrive TechnologyHelium-SealedPower TechnologiesPowerChoice, PowerBalanceSecurity FeaturesAES-256 Hardware Encryption, Seagate Secure, Secure EraseDimensions (H × W × D)26.1 mm × 101.85 mm × 147.0 mmDimensions (H × W × D, Inches)1.028 in × 4.010 in × 5.787 inWeight670 g (1.477 lb)Reliability FeaturesAdvanced Error Recovery, Vibration ResistanceOperation24×7 Enterprise Continuous DutyUse CaseHyperscale Data Centers, Enterprise Servers, High-Capacity Storage, Analytics, Backup, Archival