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Silver 3.5 inch internal hard drive with circuit board visible on underside

Seagate

Seagate Exos X20 ST20000NM007D 20TB 7200 RPM 256MB 3.5" internal hard drive

SKU CH-K3SZ-28ETX MPN ST20000NM007D

A 20 TB 3.5-inch enterprise hard drive spinning at 7,200 RPM with 256 MB cache and a 2.5 million-hour MTBF for high-capacity storage arrays

  • InterfaceSATA 6.0Gb/s
  • Capacity20TB
  • NAND Flash Memory TypeHard Drive
  • Recording TechnologyCMR
  • RPM7200 RPM
  • Cache256MB
  • 20 TB capacity stores massive datasets in a single 3.5" drive
  • 7200 RPM spindle with 256 MB cache delivers up to 285 MB/s transfer rates
  • 5 million hour MTBF and 550 TB yearly workload rating ensure enterprise-grade reliability
  • CMR recording technology provides consistent write performance for data-intensive applications
  • SATA 6.0 Gb/s interface integrates directly into existing server and storage infrastructure

Enterprise Storage Drive

The Seagate Exos X20 ST20000NM007D is a 20TB 3.5 inch internal hard drive built for enterprise storage environments. It uses a SATA 6.0Gb/s interface and conventional magnetic recording technology to deliver high-capacity reliability. The drive spins at 7200 RPM with a 256MB cache to support demanding data centre workloads. It is designed for operators who need maximum rack-space efficiency.

Thermals and Power

Customisable power options include PowerChoice and PowerBalance technology to optimise consumption during active and idle periods. The 3.5 inch form factor fits standard enterprise drive bays with dimensions of 147.00mm length, 101.85mm width and 26.10mm height. A workload rating of 550TB per year and a 2.5M-hour MTBF indicate engineering for continuous operation. Average latency is 4.16ms under normal use.

20TB Capacity Decides Fit

The single specification that determines suitability is the 20TB capacity, which provides the highest areal density for hyperscale and cloud architectures. Buyers who need less raw capacity per drive or a different interface protocol should consider other models. Sustained data transfer rates reach up to 285 MB/s to feed analytics and scale-out applications. This capacity enables the lowest cost per terabyte for massive deployments.

Points forts

  • 20 TB capacity stores massive datasets in a single 3.5" drive
  • 7200 RPM spindle with 256 MB cache delivers up to 285 MB/s transfer rates
  • 5 million hour MTBF and 550 TB yearly workload rating ensure enterprise-grade reliability
  • CMR recording technology provides consistent write performance for data-intensive applications
  • SATA 6.0 Gb/s interface integrates directly into existing server and storage infrastructure

Caractéristiques

BrandSeagate
SeriesExos X20
ModelST20000NM007D
InterfaceSATA 6.0Gb/s
Capacity20TB
NAND Flash Memory TypeHard Drive
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
Poids d’expédition0.64 kg
Dimensions du colis152 × 102 × 32 mm

Questions sur cet article

How do I install the 3.5" 20TB SATA drive in a server chassis?

Mount the drive using the standard 3.5" screw holes (147.00mm length, 101.85mm width, 26.10mm height), connect the SATA 6.0Gb/s data cable and a SATA power connector; the step often missed is enabling the drive in the RAID controller or HBA BIOS so the OS sees the full 20000GB capacity.

What maintenance or replacement will the Exos X20 20TB drive need over its service life?

The drive is rated for 550TB per year workload and 2.5M-hour MTBF; no scheduled mechanical maintenance is required, but plan to replace the unit once cumulative writes approach the annualised workload limit or after the five-year design life.

What performance limit appears first during sustained heavy writes on this 7200 RPM CMR drive?

The sustained transfer rate caps at 285 MB/s, so the sequential write throughput ceiling is reached before the 256MB cache or 4.16ms average latency become bottlenecks.

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