ST20000NM002H Seagate Exos X24 20TB SATA 512 MB 3.5" Server HDD

High-Density 3.5in Enterprise SATA HDD for 24/7 Data Centre Storage with the ST20000NM002H

The ST20000NM002H is a 20TB 3.5in enterprise HDD engineered for capacity-centric server platforms where CPU and memory resources are allocated to storage services rather than compute acceleration. In scale-out storage nodes and high-density JBOD enclosures, the ST20000NM002H provides predictable throughput characteristics for sequential and mixed workloads, supporting stable performance under sustained queue depth typical of RAID rebuilds and background scrubbing.

Designed for SATA backplanes and single-port connectivity, the ST20000NM002H integrates cleanly into PCIe-based HBA or storage controller topologies, allowing flexible expansion while keeping cost per TB controlled. CMR recording and a 7200RPM spindle optimise consistency for multi-drive arrays, while 512MB cache supports burst handling during metadata activity and write coalescing. Advanced format support for 512e and 4Kn enables alignment with modern file systems, object stores, and sector-size standardisation across heterogeneous fleets.

Why Choose the ST20000NM002H?

The ST20000NM002H is a pragmatic choice for architects building dense, serviceable storage tiers that must scale by adding drives and shelves without introducing controller complexity. With helium sealing, RSA-3072 signed firmware support, and an MTBF of 2.5M hours, the ST20000NM002H supports enterprise reliability expectations for 24/7 operation and predictable lifecycle planning in large RAID and erasure-coded pools.

Seagate designs the Exos line with data centre operational discipline in mind, focusing on fleet-level consistency, long-duty-cycle endurance, and compatibility with standard hot-plug drive carriers and storage management workflows across modern server and enclosure ecosystems.

Key Applications:

• RAID arrays and JBOD expansion shelves
• Backup repositories and restore staging
• Object storage nodes and scale-out storage
• Cold and warm data tiers
• Archival content repositories

At Happyware - Server Hardware you benefit from bulk order discount options for large ST20000NM002H deployments and can secure an extended warranty up to 6 years to align drive coverage with your storage platform refresh cycle.