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3.5 inch internal hard drive with silver metal casing and black circuit board visible on underside

Seagate

Seagate Exos X18 ST18000NM001J 18TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-0P3G-SN6QW MPN ST18000NM001J

An 18 TB enterprise hard drive with 7200 RPM, 256 MB cache and SATA 6.0 Gb/s interface

  • InterfaceSATA 6.0Gb/s
  • Capacity18TB
  • NAND Flash Memory TypeHard Drive
  • RPM7200 RPM
  • Cache256MB
  • Average Latency4.16ms

Options SATA 6.0Gb/s

  • Market-leading 18TB capacity maximises petabytes per rack
  • Helium sealed design lowers power and weight per terabyte
  • 5M-hour MTBF rating backs enterprise-class reliability
  • 7200 RPM with 256MB cache delivers high-throughput performance
  • SATA 6.0Gb/s interface supports large-scale data transfers

Enterprise 18 TB SATA drive

The Seagate Exos X18 ST18000NM001J is a 3.5-inch internal hard drive built for enterprise storage arrays. It delivers 18 TB of capacity on a SATA 6.0 Gb/s interface, spins at 7 200 RPM and provides a 256 MB cache to sustain heavy sequential workloads in cloud and scale-out data centres.

Suited for hyperscale and archive workloads

This drive targets operators who need maximum terabytes per rack and a 2.5 M-hour MTBF rating for continuous operation. It is less appropriate for buyers who need the low latency of solid-state media or a smaller form factor for desktop enclosures.

18 TB capacity decision

The single specification that determines fit is the 18 TB capacity combined with the SATA 6.0 Gb/s interface; if the storage pool requires that density on a standard SATA backplane this model matches the requirement, otherwise a different capacity or interface must be chosen.

Helstu kostir

  • Market-leading 18TB capacity maximises petabytes per rack
  • Helium sealed design lowers power and weight per terabyte
  • 5M-hour MTBF rating backs enterprise-class reliability
  • 7200 RPM with 256MB cache delivers high-throughput performance
  • SATA 6.0Gb/s interface supports large-scale data transfers

Tæknilýsing

BrandSeagate
SeriesExos X18
ModelST18000NM001J
InterfaceSATA 6.0Gb/s
Capacity18TB
NAND Flash Memory TypeHard Drive
RPM7200 RPM
Cache256MB
Average Latency4.16ms
FeaturesMarket-leading 18TB 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 in
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm
Sendingarþyngd0.91 kg
Stærð sendingar178 × 152 × 51 mm

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Do I need a SATA 6.0Gb/s port and a 3.5-inch drive bay to install the ST18000NM001J?

Yes, the drive uses a SATA 6.0Gb/s interface and a standard 3.5-inch form factor, so your system must provide a compatible SATA data port, a SATA power connector, and a 3.5-inch mounting bay.

Will the ST18000NM001J work alongside my older 3.5-inch SATA drives in the same array?

It will operate on the same SATA 6.0Gb/s bus as older 3.5-inch drives, but the 18TB capacity and 7200 RPM speed may change rebuild times and power draw compared with smaller, slower units.

How can I verify the Exos X18 is running at 7200 RPM after installation?

Check the drive’s reported rotational speed in your BIOS, UEFI, or a SMART monitoring tool; it should show 7200 RPM and a SATA 6.0Gb/s link rate.

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