Abstract
This defensive publication describes systems and methods for extending the usable life of data storage devices, including heat-assisted magnetic recording (HAMR) disk drives, by selectively identifying and logically depopulating heads which contain degraded recording, sensing, servo, or energy-delivery elements while maintaining continued device operation. By monitoring workload-normalized, per-element reliability metrics and applying standardized element depopulation, reporting, and restoration mechanisms, devices that would otherwise be removed from service due to element degradation can continue operating at reduced but usable capacity. The approach improves fleet reliability, reduces total cost of ownership, and decreases electronic waste, while remaining compatible with industry-standard host communication protocols.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Ryan, Sinéad; Bhushan, Sandeep; Wallace, Kyle; and Seagate Technology LLC, "Regeneration of Storage Element Maps in Field After Selective Removal of Suboptimal Recording, Sensing, Servo, or Energy-Delivery Elements in a Data Storage Device", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/9782