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Silver 3.5-inch bare SATA hard drive with exposed circuit board

Seagate

Seagate Exos X18 ST18000NM000J 18TB 7200 RPM 256MB SATA 3.5" internal hard drive

SKU CH-W5JY-Y8MA3

An 18 TB, 7200 RPM SATA enterprise hard drive with 256 MB cache and helium-sealed design for high-capacity data-centre storage

  • PackagingBare Drive
  • InterfaceSATA 6.0Gb/s
  • Capacity18TB
  • NAND Flash Memory TypeHard Drive
  • RPM7200 RPM
  • Cache256MB
  • 18 TB capacity stores more data per rack
  • 7200 RPM spindle speed enables fast sequential throughput
  • 256 MB cache improves burst performance
  • Helium sealed design reduces power per terabyte
  • SATA 6.0 Gb/s interface fits existing enterprise infrastructure

18 TB Enterprise SATA Drive

The Seagate Exos X18 ST18000NM000J is an 18 TB 3.5-inch internal hard drive built for enterprise storage. It spins at 7200 RPM with a 256 MB cache and connects via a SATA 6.0Gb/s interface. The helium-sealed design supports high-capacity rack deployments.

Suited for Bulk Data Centres

This drive fits cloud data centres and massive scale-out environments that prioritise maximum capacity per rack and low power per terabyte. Buyers who need faster random-access latency or a smaller physical footprint should look at other storage types.

SATA 6.0Gb/s Interface Decides Fit

The single specification that determines compatibility is the SATA 6.0Gb/s interface. Your server or storage array must provide a matching SATA port and 3.5-inch bay with adequate cooling for a 7200 RPM helium drive.

商品特色

  • 18 TB capacity stores more data per rack
  • 7200 RPM spindle speed enables fast sequential throughput
  • 256 MB cache improves burst performance
  • Helium sealed design reduces power per terabyte
  • SATA 6.0 Gb/s interface fits existing enterprise infrastructure

商品規格

BrandSeagate
SeriesExos X18
ModelST18000NM000J
PackagingBare Drive
InterfaceSATA 6.0Gb/s
Capacity18TB
NAND Flash Memory TypeHard Drive
RPM7200 RPM
Cache256MB
Average Latency4.16ms
FeaturesMarket-leading 18 TB 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 centre and massive scale-out data centre applications.
Hyperscale SATA model tuned for large data transfers and low latency.
PowerBalance feature optimises Watts/TB.
Maximise 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 mon
UsageFor Enterprise Storage
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.85mm
Length (maximum)147.00mm

商品問答

What does the 18 TB capacity mean once the drive is installed in a real machine?

The drive provides 18 TB of raw storage for enterprise workloads, using a helium-sealed design and 7200 RPM platters to deliver high capacity per rack.

What does the SATA 6.0 Gb/s interface cap in practice?

The SATA 6.0 Gb/s link limits maximum transfer rate to 6.0 Gb/s, so sustained throughput cannot exceed that ceiling regardless of the 256 MB cache.

What physical space and mounting does the 3.5 inch form factor need?

It fits a standard 3.5 inch bay with maximum dimensions of 147.00 mm length, 101.85 mm width and 26.10 mm height.

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