Seagate Exos X20 Enterprise 3.5 SAS Hard Drives (Helium)

Manufacturer Part Number: ST20000NM002D

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

Specification:

• Capacity: 20 TB
• Cache: 256 MB

• Reliability/Data Integrity:

  • Mean Time Between Failures (MTBF, hours): 2,500,000

  • Reliability Rating @ Full 247 Operation (AFR): 0.35%

  • Nonrecoverable Read Errors per Bits Read: 1 sector per 10E15

  • Power-On Hours per Year (247): 8760

  • 512e Sector Size (Bytes per Sector): 512, 520, 528

  • 4Kn Sector Size (Bytes per Sector): 4096, 4160, 4224

  • Limited Warranty (years): 5

• Performance:

  • Spindle Speed (RPM): 7200RPM

  • Interface Access Speed (Gb/s): 12.0, 6.0, 3.0

  • Max. Sustained Transfer Rate OD (MB/s,MiB/s): 285/272

  • Random Read/Write 4K QD16 WCD (IOPS): 168/550

  • Average Latency (ms): 4.16

  • Interface Ports: Dual

  • Rotation Vibration @ 20-1500 Hz (rad/sec^2): 12.5

• Power Consumption:

  • Idle A (W) Average: 5.8W

  • Max Operating, Random Read/Write 4K/16Q (W): 9.8, 7.0

  • Power Supply Requirements: +12 V and +5 V

• Environmental:

  • Temperature, Operating (C): 5C ~ 60C

  • Vibration, Nonoperating: 2 to 500Hz (Grms): 2.27

  • Shock, Operating 2ms (Read/Write) (Gs): 40

  • Shock, Nonoperating 2ms (Gs): 200

• Dimensions (WxDxH): 4.010 x 5.787 x 1.028 inch / 101.85 x 147.0 x 26.1 mm
• Weight: 670g/1.477lbs