Speculative read regulation in hard disk drives having read reliability budgets
US12334108B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2024 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Apr 29, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0676
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described are systems, devices and methods for regulating speculative reading in a hard disk drive that has a read reliability budget. Regulating speculative reading under a read reliability budget involves selecting an amount of read look ahead (RLA) in response to determining whether or not a read rate exceeds the read reliability budget. When the read rate is lower than the read reliability budget, a full RLA amount can be used, thus ensuring high performance. When the read rate exceeds the read reliability budget, the RLA amount can be adjusted down while maintaining performance at acceptable levels. Adjustments to RLA may be made at periodic intervals, and in response to whether the workload is more sequential or more random.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.