Seagate Exos X18 12 Gb/s SAS 3.5" Internal Hard Drive, 18TB Capacity, 7200 RPM Spindle Speed, 256MB Cache, 2,500,000 Hours MTBF, 270 MB/s 258 MiB/s Transfer Rate | ST18000NM004J

  • 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 monitor internal drive conditions for optimal operation and performance
    • Availability:
    In Stock
    Product Code:
    Exos X18
    Brand:
    Seagate
    QAR 1,505.01
    Micro Less
    Update Last Updated: 2025-07-18 22:28:48
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    Exos X18

     

    Seagate manufactures hard drives that specifically address the demand for hyperscale cloud scalability. As the flagship of the Seagate® X class, the Exos® X18 enterprise hard drives are the highest-capacity hard drives in the fleet.

     

     

    Specifications

     

    Standard ModelST18000NM004J
    Helium DriveYes
    CMRYes
    T10 DIFYes
    SuperParityYes
    Low HalogenYes
    PowerChoice™Yes
    PowerBalance™Yes
    Hot-Plug SupportYes
    Cache (MB)256
    OSPYes
    RSA 3072 FW VerificationYes
    MTBF (hrs)2,500,000
    AFR0.35%
    Read Errors<1 in 10E15
    Power-On Hours8,760
    512e Sector512, 520, 528
    4Kn Sector4096, 4160, 4224
    Warranty5 yrs
    Spindle Speed7200 RPM
    Interface Speed12.0, 6.0, 3.0 Gb/s
    Transfer Rate (MB/s, MiB/s)270 / 258
    Random R/W IOPS (4K QD16)170 / 550
    Latency (ms)4.16
    PortsDual
    RV (rad/sec²)12.5
    Idle Power (W)5.8
    Max Power R/W (W)9.9 / 7.0
    Power Supply+12V & +5V
    Op Temp (°C)5–60
    Non-op Vib (Grms)2.27
    Shock Op (Gs)50
    Shock Non-op (Gs)200
    Height (mm/in)26.1 / 1.028
    Width (mm/in)101.85 / 4.01
    Depth (mm/in)147 / 5.787
    Weight (g/lb)670 / 1.477
    Carton Qty20
    Pallet/Layer40 / 8

    General
    Brand
    • Seagate
    Model
    • Exos X18
    Microless SKU
    • 245326
    Date first available
    • 18 June, 2025
    Capacity
    • 18 TB
    Form Factor
    • 3.5"
    RPM
    • 7200 RPM

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