Seagate Exos X18 ST16000NM004J 16TB 512e SAS Hard Drive

Seagate Part #/MPN: ST16000NM004J

DiscTech Item #: SGT-ST16000NM004J-BN-OE

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Enterprise Grade

Capacity: 16TB

Speed: 7,200RPM

Interface Types: SAS Serial Attached SCSI

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 261/249

Average Seek Time: 4.16

Electrical Interface: SAS-3 Serial Attached SCSI v3 - 12.0Gbps

On-Board Cache: 256MB

Seagate Exos X18 ST16000NM004J 16TB 3.5" LFF 12Gbps 7.2K RPM Enterprise 512e Fast Format SAS Enterprise HDD - Brand New

Seagate Exos X18 ST16000NM004J 16TB / 16000GB 3.5" LFF / Large From Factor 12.0 Gb/s 7200 RPM Enterprise 512e / 512 Emulation Fast Format SAS / Serial Attached SCSI HDD / Hard Disk Drive - Brand New

Scalable. Responsive. Innovative.
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.

Maximum Storage Capacity for Highest Rack Space Efficiency

Market-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 center and massive scale-out data center applications

Hyperscale SATA model tuned for large data transfers and low latency

PowerBalance feature optimizes 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

Data protection and security: Seagate Secure features for safe, affordable, fast and easy drive retirement

Proven enterprise-class reliability backed by a 2.5M-hr MTBF rating

Best-Fit Applications

  • Scalable hyperscale applications/cloud data centers
  • Massive scale-out data centers
  • Big data applications
  • High-capacity density RAID storage
  • Mainstream enterprise external storage arrays
  • Distributed file systems, including Hadoop and Ceph
  • Enterprise backup and restore— D2D, virtual tape
  • Centralized surveillance



This drive is compatible with any server that accepts 3.5inx1.0in SAS Drive.

Exos Enterprise X18
Standard Model FastFormat (512e/4Kn)ST16000NM004J
Interface12Gb/s SAS
Capacity16TB / 16000GB
Helium Sealed-Drive DesignYes
Conventional Magnetic Recording (CMR)Yes
Protection Information (T10 DIF)Yes
Low HalogenYes
PowerChoice Idle Power TechnologyYes
PowerBalance Power/Performance TechnologyYes
Hot-Plug SupportYes
Cache, Multisegmented (MB)256
Organic Solderability PreservativeYes
RSA 2048 Firmware VerificationYes
Reliability/Data Integrity
Mean Time Between Failures (MTBF, hours)2,500,000
Reliability Rating @ Full 24×7 Operation (AFR)0.35%
Nonrecoverable Read Errors per Bits Read1 Sector per 1015
Power-On Hours per Year (24×7)8760
512e Sector Size (Bytes per Sector)
  • 512
  • 520
  • 528
4Kn Sector Size (Bytes per Sector)
  • 4096
  • 4160
  • 4224
Spindle Speed (RPM)7200
Interface Access Speed (Gb/s)
  • 12.0
  • 6.0
  • 3.0
Max Sustainable Transfer Rate OD (MB/s, MiB/s)
  • 261
  • 249
Random Read/Write 4K QD16 WCD (IOPS)170/550
Average Latency (ms)4.16
Interface PortsDual
Rotational Vibration @ 20-1500Hz (rad/sec)12.5
Power Consumption
Idle A (W) Average5.8 W
Max Operating, Random Read/Write 4K/16Q (W)9.9, 7.0
Power Supply Requirements+12 V and +5 V
Temperature, Operating (°C)5°C - 60°C
Vibration, Nonoperating: 2 to 500Hz (Grms)2.27
Shock, Operating Read/Write (Gs)50
Shock, Nonoperating, 2ms (Gs)200
Height (in/mm, max)1.028in/26.1mm
Weight (in/mm, max)4.010in/101.85mm
Depth (in/mm, max)5.787in/147.0mm
Weigt (g/lb)670g/1.477lb

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ROHS Compliant

Weight: 1.8 lb

Warranty: 1 Year DiscTech

Brand New

Condition Levels Explained

The product is brand new.

1 Year DiscTech Warranty

Product Warranties Explained

The product has a DiscTech warranty for the time period specified. View our limited warranty