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Standard 3.5 inch silver hard drive with label showing 18TB capacity and model ST18000NM003D

Seagate

Seagate Exos X20 ST18000NM003D 18TB 7200 RPM SATA 3.5in internal hard drive

SKU CH-D5P2-KVTZQ

An 18 TB 3.5-inch SATA drive with 7200 RPM, 256 MB cache and CMR recording for enterprise storage

  • InterfaceSATA 6.0Gb/s
  • Capacity18TB
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache256MB
  • Average Latency4.16ms
  • 18 TB capacity stores massive datasets in a single 3.5" drive
  • 7200 RPM spindle speed delivers fast sequential throughput for enterprise workloads
  • 256 MB cache accelerates random read and write operations
  • CMR recording technology ensures consistent performance in RAID and NAS arrays
  • Helium-sealed design lowers power consumption per terabyte

18TB CMR Enterprise Hard Drive

The Seagate Exos X20 ST18000NM003D is an 18TB 3.5-inch internal hard drive built for enterprise storage. It spins at 7200 RPM with a 256MB cache and uses the SATA 6.0Gb/s interface. CMR recording technology and a helium-sealed design support high-capacity workloads in standard drive bays.

Suited for NAS and Data-Center Arrays

This drive targets cloud storage, hyperscale deployments, and NAS systems such as Synology or QNAP. It handles big-data analytics, object storage, distributed file systems, and enterprise backup. Builders who need a smaller capacity or a different form factor should look elsewhere.

SATA 6.0Gb/s Interface Decides Compatibility

The single specification that determines fit is the SATA 6.0Gb/s interface. Your system or enclosure must provide a standard SATA data and power connection for this 3.5-inch drive to operate.

Points forts

  • 18 TB capacity stores massive datasets in a single 3.5" drive
  • 7200 RPM spindle speed delivers fast sequential throughput for enterprise workloads
  • 256 MB cache accelerates random read and write operations
  • CMR recording technology ensures consistent performance in RAID and NAS arrays
  • Helium-sealed design lowers power consumption per terabyte

Caractéristiques

BrandSeagate
SeriesExos X20
ModelST18000NM003D
InterfaceSATA 6.0Gb/s
Capacity18TB
Recording TechnologyCMR
RPM7200 RPM
Cache256MB
Average Latency4.16ms
FeaturesMarket-leading 20TB HDD offering the highest capacity available for more petabytes per rack*
Highly reliable performance with enhanced caching, making it the logical choice for cloud data center and massive scale-out data center applications
Hyperscale SATA model tuned for large data transfers and low latency
PowerBalance feature optimizes Watts/TB
Maximize total cost of ownership savings through lower power and weight with helium sealed-drive design
Proven helium side-sealing weld technology for added handling robustness and leak protection
Digital environmental sensors to monitor i
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm

Questions sur cet article

Will the 3.5-inch form factor with 26.10mm height fit my standard desktop drive bay?

Yes, the drive measures 147.00mm long, 101.85mm wide and 26.10mm high, matching the standard 3.5-inch desktop bay dimensions.

What is the correct way to connect the SATA 6.0Gb/s interface, and what common mistake should I avoid?

Attach both the SATA data cable and the 15-pin SATA power connector; a frequent error is leaving the power cable unseated, which prevents the drive from spinning up.

The helium-sealed design and 2,500,000 MTBF rating suggest long life — what maintenance or replacement should I plan for?

No user-serviceable parts exist inside the sealed helium enclosure; monitor SMART attributes for reallocated sectors and replace the drive if the health indicators degrade.

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