Product Specifications

Seagate Exos X24 ST12000NM002H 12TB 3.5-Inch Enterprise SATA Hard Drive

Product Overview

The Seagate Exos X24 (ST12000NM002H) is a next-generation enterprise-class 3.5-inch hard drive built for hyperscale data centres and mission-critical storage workloads. With a 12TB storage capacity and a SATA 6Gb/s interface, this drive delivers outstanding throughput, reliability, and energy efficiency for large-scale cloud infrastructure, enterprise servers, and mass-capacity storage arrays.

Part of Seagate's most advanced Exos lineup, the X24 is built on a globally proven platform deployed by leading cloud service providers worldwide. With a helium-sealed design, 512MB cache, and a 2.5 million-hour MTBF, it is purpose-built for continuous 24/7 operation in the most demanding environments.

Key Features

High-Capacity 12TB Storage

The Exos X24 delivers 12TB of enterprise storage per drive, maximising rack-space efficiency and enabling more petabytes per rack unit. This makes it an ideal choice for high-density deployments where capacity per rack is the governing constraint.

SATA 6Gb/s Interface with 285 MB/s Transfer Rate

Equipped with a SATA III 6Gb/s interface, the drive achieves a maximum sustained data transfer rate of up to 285 MB/s, making it one of the fastest drives in the Exos lineup. The large 512MB multisegmented cache further boosts sequential read/write performance for data-intensive workloads.

Enterprise-Grade Reliability

Rated for a workload of 550TB/year with a 2.5 million-hour MTBF and an annualised failure rate (AFR) of just 0.35%, the Exos X24 is engineered for non-stop operation. It supports RAID configurations and features Super Parity technology for enhanced data integrity across large storage arrays.

Helium-Sealed CMR Design

The hermetically sealed helium-filled enclosure combined with Conventional Magnetic Recording (CMR) technology delivers high areal density, reduced power consumption, lower operating temperatures, and minimal vibration — all critical advantages in dense rack-mounted server environments.

Advanced Power Management

Seagate's PowerBalance™ and PowerChoice™ idle power technologies allow IT administrators to optimise the balance between performance and energy consumption, significantly reducing total cost of ownership (TCO) at scale across hyperscale and enterprise deployments.

Seagate Secure™ Data Protection

The Exos X24 features Instant Secure Erase (ISE) for fast, secure drive repurposing and disposal. Optional Self-Encrypting Drive (SED) and FIPS 140-2 validated models are available, offering government-grade data-at-rest protection and compliance with corporate and federal security requirements.

FastFormat™ Technology

Supporting both 512e and 4Kn sector formats, the Exos X24 includes Seagate's FastFormat™ feature, which allows easy reformatting between sector sizes without drive replacement — providing flexibility for evolving infrastructure requirements.

Hot-Plug Support

With native hot-plug support, the Exos X24 can be inserted or removed from a live system without downtime, making it ideal for enterprise storage arrays and high-availability server environments that require continuous operation.

Best-Fit Applications

• Hyperscale cloud data centres and object storage
• Enterprise NAS, SAN, and RAID storage arrays
• Distributed file systems including Hadoop and Ceph
• Online transaction processing (OLTP) and big data analytics
• Enterprise backup, restore, and virtual tape (D2D)
• Centralised surveillance and video analytics storage
• Engineering workstations, mainframes, and supercomputers

What's in the Box

• 1x Seagate Exos X24 ST12000NM002H 12TB 3.5-Inch SATA Hard Drive
• Product documentation / warranty card