Seagate ST12000NM0027 12TB SAS Hard Drive

Seagate Part #/MPN: ST12000NM0027

DiscTech Item #: SGT-ST12000NM0027-BN-OE

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Enterprise Grade

Capacity: 12TB

Speed: 7,200RPM

Interface Types: SAS Serial Attached SCSI

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: Up to 261, 249

Average Seek Time: 4.16

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

On-Board Cache: 256MB

Seagate ST12000NM0027 12TB 3.5in 12Gbps 7.2K RPM 512e Helium SAS HDD - Brand New

Seagate ST12000NM0027 12TB / 12000 3.5" 12.0 Gb/s 7200 RPM 512 Emulation Helium Serial Attached SCSI Hard Disk Drive - Brand New

Enterprise Capacity 3.5 HDD (Helium)
Maximum Storage Capacity for Highest Rack Space Efficiency

  • 12TB per drive for 50% more petabytes per rack
  • Industry's lowest power and weight for optimum data center TCO
  • Highest 12TB HDD performance with enhanced caching, making it perfect for Big Data applications
  • Hyper scale SATA model tuned for large data transfers
  • PowerBalance™ feature optimizes IOPS/Watt
  • Advanced Write Caching feature for 20% boost in random write performance
  • Forged, wrought-aluminum base and a helium sealed-drive design with no porosity and uniform density
  • Superior material and weld-width design for a more robust, hermetically sealed-drive enclosure that protects from helium leaks
  • Digital environmental sensors for measuring internal pressure, helping to ensure high reliability, performance and quality
  • Latest hermetic interconnect technology supporting higher data rate heads and higher pin counts for extreme thermal conditions
  • Proven enterprise-class reliability backed by 2.5M-hr MTBF

Best-Fit Applications

  • Hyper scale 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.

Enterprise Capacity 3.5 HDD (Helium)
Model NumberST12000NM0027
Sector Size512e
Capacity12TB / 12000GB
InterfaceSAS 12Gb/s
Superior Helium Sealed-Drive Designed With Wide WeldYes
Digital Sensors for Helium PressureYes
Protection Information (T10 DIF)Yes
PowerChoice™/PowerBalance™ TechnologyYes
Low Halogen/Hot-Plug SupportYes
Cache, Multisegmented (MB)256
Organic Solderability PreservativeYes
Secure Download and Diagnostics (SD&D) RSA 2048 signed firmwareYes
Reliability/Data Integrity
Mean Time Between Failures (MTBF, hours)2.5 Million
Reliability Rating @ Full 24×7 Operation (AFR)0.35%
Nonrecoverable Read Errors per Bits Read1 sector per 10E15
Power-On Hours8760
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. Sustained Transfer Rate OD (MB/s,MiB/s)Up to 261, 249
Random Read/Write 4K QD16 WCD (IOPS)170/400
Interface PortsDual
Rotational Vibration @ 1500Hz (rad/s)12.5
Power Consumption
Idle A (W) Average5.5W
Average Latency (ms)4.16
Operating Power9.3
Power Supply Requirements+12 V and +5 V
Temperature, Operating (°C)5°C – 60°C
Vibration, Nonoperating: 10Hz to 500Hz (Grms)2.27
Height(mm/in, max)26.11mm/1.028in
Width(mm/in, max)101.60mm/4.0in
Depth(mm/in, max)147.0mm/5.787in

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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