Seagate Exos X24 20TB Enterprise Hard Drive

Product Overview

• Manufacturer: Seagate Technology

• Product Series: Exos X24

• Model Number: ST20000NM002H

• Form Factor: 3.5-inch Enterprise Internal HDD

• Capacity: 20 TB

• Interface: SATA 6Gb/s (Single Port)

• Security Variant: Standard Model with Seagate Instant Secure Erase (ISE)

Technical Specifications

Feature	Specification
Model Number	ST20000NM002H
Formatted Capacity	20 TB
Interface	SATA 6 Gb/s
Spindle Speed	7,200 RPM
Cache (Multisegmented)	512 MB
Recording Technology	Conventional Magnetic Recording (CMR)
Drive Architecture	Helium-Sealed Design
Sector Formats Supported	512e / 4Kn Emulation
Max Sustained Transfer Rate (OD)	285 MB/s (272 MiB/s)
Random Read / Write (4K QD16 WCD)	168 IOPS / 550 IOPS
Average Latency	4.16 ms

Reliability & Serviceability

Parameter	Specification
Mean Time Between Failures (MTBF)	2,500,000 hours
Annualized Failure Rate (AFR)	0.35% (Full 24×7 Operation)
Non-recoverable Read Error Rate	< 1 sector per $10^{15}$ bits read
Power-On Hours	8,760 hours/year (24×7 operational rating)
Limited Warranty	5 Years

Power Consumption

Operating Mode	Power Consumption
Idle (Average)	6.3 W
Operating (Random Read 4K)	8.9 W
Operating (Random Write 4K)	7.1 W
Power Supply Requirements	+12 V and +5 V

Physical & Environmental Specifications

Property	Value
Height	26.10 mm / 1.028 in
Width	101.85 mm / 4.010 in
Depth	147.00 mm / 5.787 in
Weight	685 g / 1.51 lb
Operating Temperature	5°C to 60°C
Operating Shock (2ms, Read/Write)	40 Gs
Non-Operating Shock (2ms)	200 Gs
Rotational Vibration (20–1500 Hz)	12.5 rad/s²