ST20000NM002H specification sheet

Overview:

Seagate Exos X24 20TB 3.5-inch 7200RPM SATA Server Hard Drive - ST20000NM002H
The Seagate Exos X24 20TB enterprise hard drive is engineered for large-scale storage environments that demand exceptional capacity, dependable performance, and efficient operation. Built for data centres, cloud infrastructure, enterprise servers, and high-density storage arrays, this 3.5-inch SATA drive delivers consistent throughput while maintaining low latency for demanding workloads. Its helium-sealed design helps improve efficiency and reliability, making it a practical choice for organisations handling massive volumes of data.

Description:

The Seagate Exos X24 20TB is an enterprise-grade SATA hard drive designed to support hyperscale data centres, business servers, NAS deployments, and large storage systems. Featuring Conventional Magnetic Recording (CMR), a 7200RPM spindle speed, 512MB cache, and sustained transfer speeds of up to 285MB/s, it delivers dependable performance for data-intensive workloads while maximising storage density and lowering the overall cost per terabyte.

Features:

Why Choose the Seagate Exos X24 20TB
Whether you are expanding enterprise storage or deploying new server infrastructure, the Exos X24 provides an excellent combination of capacity, speed, and efficiency. Its large storage capacity makes it ideal for big data analytics, backup repositories, virtualisation platforms, cloud storage, and large-scale archival applications.

Enhanced caching technology helps deliver consistent response times, while the helium-sealed construction reduces internal friction to improve operational efficiency and long-term performance.

Key Highlights

• 20TB enterprise storage capacity
• 3.5-inch form factor
• SATA 6Gb/s interface
• 7200RPM spindle speed
• 512MB cache
• Up to 285MB/s sustained data transfer rate
• Conventional Magnetic Recording (CMR) technology
• Helium-sealed drive design
• Single SATA interface port
• Optimised for enterprise and hyperscale storage environments

Performance for Enterprise Workloads
Designed for continuous enterprise operation, the Seagate Exos X24 offers the performance needed for modern data centres. The combination of high rotational speed, generous cache memory, and CMR recording technology ensures predictable write performance across demanding applications.

This makes the drive well suited for:

• Enterprise servers
• Cloud storage infrastructure
• Big data analytics
• Large-scale backup systems
• Storage arrays
• High-capacity NAS environments
• Virtualisation platforms

Technical Details

• Brand: Seagate
• Product family: Exos X24
• Part Number / SKU: ST20000NM002H
• Capacity: 20TB
• Form factor: 3.5-inch
• Interface: SATA 6Gb/s
• Recording technology: Conventional Magnetic Recording (CMR)
• Rotational speed: 7200RPM
• Cache: 512MB
• Maximum sustained transfer rate: Up to 285MB/s
• Drive design: Helium sealed
• Interface ports: Single SATA interface

Ideal Storage Solution
Businesses looking to maximise rack space without compromising performance will benefit from the high storage density offered by the Exos X24 . It is designed to support growing storage requirements while helping reduce the cost per terabyte across enterprise deployments.

The Seagate Exos X24 20TB, Part Number ST20000NM002H, is an excellent choice for organisations that require reliable, scalable storage capable of supporting data-intensive operations today and future growth tomorrow.

Specifications:

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Specifications
Product Code	ST20000NM002H
Specifications	SATA 6Gb/s
Capacity	20TB
Standard Model - Seagate Instant Secure Erase (ISE) 1	ST20000NM002H
SED Model	ST20000NM001H
SED-FIPS	-
FEATURES
Helium Sealed-Drive Design	Yes
Conventional Magnetic Recording (CMR)	Yes
Super Parity	Yes
PowerChoice Idle Power Technology	Yes
PowerBalance Power/Performance Technology	Yes
Hot-Plug Support	Yes
Cache, Multisegmented (MB)	512
RSA 3072 Firmware Verification (SD&D)	Yes
RELIABILITY/DATA INTEGRITY
Mean Time Between Failures (MTBF, hours)	2500000 hrs
Reliability Rating @ Full 24 x 7 Operation (AFR)	0.35 %
Nonrecoverable Read Errors per Bits Read	<1 in 10E15
Power-On Hours per Year (24 x 7)	8760
512e Sector Size (Bytes per Sector)	512
4Kn Sector Size (Bytes per Sector)	4096
PERFORMANCE
Spindle Speed (RPM)	7200RPM
Max. Sustained Transfer Rate OD (MB/s,MiB/s)	285/272
Random Read/Write 4K QD16 WCD (IOPS)	168/550
Interface Ports	Single
Rotation Vibration @ 20-1500 Hz (rad/sec²)	12.5
POWER
Idle A (W) Average	6.3
Max Operating, Random Read/Write 4K/16Q (W)	8.9, 7.1
Power Supply Requirements	+12V and +5V
ENVIRONMENTAL
Temperature, Operating (degreesC) (Ambient / Drive Reported)	22037
Vibration, Nonoperating: 2 to 500Hz (Grms)	2.27
Shock, Operating 2ms (Read/Write) (Gs)	40Gs
Shock, Nonoperating 2ms (Gs)	200
PHYSICAL
Height (mm/in, max) 4	26.1mm/1.028in
Width (mm/in, max) 4	101.85mm/4.010in
Depth (mm/in, max) 4	147mm/5.787in
Weight (gm/lb)	685g/1.51lb
Carton Unit Quantity	20
Cartons per Pallet/Cartons per Layer	40 / 8