The Seagate Exos X24 20 TB 3.5″ SATA HDD is a high-density enterprise drive engineered for data centers, hyperscale applications, cloud storage, and mission-critical 24/7 storage environments. Built with Seagate’s helium-sealed design, the drive significantly reduces friction and power consumption while delivering exceptional storage efficiency. With a full 20 terabytes in a single 3.5″ form factor, it delivers an excellent cost-per-terabyte balance for large-scale deployments.
Operating at 7200 RPM, the Exos X24 drive provides robust data throughput and responsiveness. It features a 512 MB multi-segment cache, which helps boost sustained and burst performance for both sequential and random workloads. The drive supports both 512e and 4Kn sector formats, offering flexibility for modern file systems and storage architectures.
Reliability is a hallmark of this model: it is rated for an annual workload of 550 TB/year, and its Mean Time Between Failures (MTBF) is approximately 2.5 million hours, making it ready for intensive use. The Exos X24 also includes data protection features such as SuperParity and RSA-3072 firmware verification.
Energy management features like PowerChoice™ and PowerBalance™ allow administrators to fine-tune power usage for either performance or efficiency. The drive’s design supports hot-plug environments, and its structure is optimized to handle the vibration found in dense enterprise racks. For data security, Seagate offers Seagate Secure (self-encrypting) variants to protect data at rest.
Backed by a 5-year limited warranty, this drive is ideal for organizations that require durable, high-capacity storage with enterprise-grade features.
20 TB of storage in a 3.5″ form factor
7200 RPM spindle speed for high throughput
512 MB multi-segment cache
Helium-sealed drive design for efficiency and thermal stability
Supports 512e and 4Kn sector formats
550 TB/year workload rating
2.5 million hours MTBF
PowerChoice™ & PowerBalance™ for power-efficiency tuning
SuperParity & RSA-3072 firmware verification
Hot-plug capable design
Optional Seagate Secure encryption variant
5-year limited warranty
High Capacity at Scale: With 20 TB in one drive, you can significantly reduce rack space and simplify infrastructure.
Reliable for Always-On Use: Built for enterprise workloads with a high workload rating and long MTBF.
Flexible Power Management: Adjustable power settings help optimize for either maximum performance or energy savings.
Data Protection: Features like SuperParity and firmware RSA verification help ensure data integrity, while Seagate Secure models offer hardware-based encryption.
Enterprise Ready: Designed for rack drives with hot-plug support and vibration tolerance for dense deployments.
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