ST18000NM001D Seagate Exos X20 18TB SAS 256 MB 3.5" Server HDD
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ST18000NM001D
High-Density 3.5-inch Nearline Enterprise SAS HDD featuring dual-port HA connectivity with the ST18000NM001D
The ST18000NM001D is a 3.5-inch nearline enterprise HDD engineered for scale-out storage nodes and dense RAID shelves where predictable throughput and sustained 24x7 duty cycles matter. In modern CPU-centric storage platforms, its 18TB CMR recording and helium-sealed mechanics deliver consistent write behavior for rebuild operations, while the 256MB cache supports command queuing efficiency under mixed sequential and random IO profiles.
Designed for SAS backplanes, the ST18000NM001D integrates dual-port connectivity for multipath failover, aligning with high-availability controller architectures and hot-plug service workflows. Support for 512e and 4Kn sector formats simplifies integration across operating system generations, while end-to-end data protection via T10 DIF helps maintain integrity through the HBA, expander, and enclosure path. As storage expansion shifts toward higher lane-count PCIe in servers, this drive remains a practical capacity tier behind SAS HBAs, optimizing cost-per-TB without compromising enterprise features.
Why Choose the ST18000NM001D?
The ST18000NM001D provides a balanced density-to-reliability profile for capacity-heavy arrays, combining dual-port SAS resiliency with hardware-based SED encryption for compliant deployments. With a 2.5M-hour MTBF target and data-path integrity features, it scales cleanly from single-server RAID sets to multi-enclosure SAS domains where predictable behavior during rebuilds and failovers is operationally critical.
Seagate designs Exos-class enterprise drives with a focus on sustained data centre duty cycles, controlled vibration tolerance, and consistent firmware behavior across large fleets. This engineering approach supports standardized qualification, long-lived platform validation, and alignment with modern enclosure thermals and serviceability expectations.
Key Applications:
- Scale-out storage and object storage nodes
- RAID arrays in SAS JBOD enclosures
- Backup repositories and archive tiers
- Virtualization storage pools
- Data centre file and block storage
At Happyware - Server Hardware you benefit from non-binding offers tailored to your storage architecture and procurement plan, helping you standardize on the ST18000NM001D across enclosures and RAID builds. Bulk Order Discount options support fleet rollouts and phased expansions while maintaining consistent drive qualification.
Technical details of ST18000NM001D
How long is the Warranty and how you can get technical support for ST18000NM001D
| Warranty: | 36 months (part) |
|---|---|
| RMA through customer: | yes |
| RMA Url: | https://www.seagate.com/support/warranty-and-replacements/ |
| Description: | Items must be returned first for RMA. Advanced replacement is not available. No guaranteed delivery times specified. On-site service is not offered as standard. The warranty does not cover data loss. Regular data backups are recommended |
| Support Portal: | https://support.happyware.com |
|---|
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