Managing input/output operations for shingled magnetic recording in a storage system
US10521345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2018 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Aug 27, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/10675
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for improving the management of data input and output (I/O) operations for Shingled Magnetic Recording (SMR) devices in a network storage system is disclosed. The storage system includes a storage controller that receives a series of write requests for data blocks to be written to non-sequential addresses within a pool of SMR devices. The storage controller writes the data blocks from the series of write requests to a corresponding sequence of data clusters allocated within a first data cache of the storage controller for a thinly provisioned volume of the pool of SMR devices. Upon determining that a current utilization of the first data cache's data storage capacity exceeds a threshold, the sequence of data clusters including the data blocks from the first data cache are transferred to sequential physical addresses within the SMR devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.