Method and apparatus for avoiding redundant data recovery
US11163657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Mar 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1032
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for use in a storage system, comprising: detecting that at least one storage device in a redundant storage device array has failed, the redundant storage device array including a plurality of storage devices; storing, in a memory, a recovery cache containing recovered data blocks, the recovered data blocks containing data previously stored on the failed storage device that has been calculated as part of executing read commands before the redundant storage device array is rebuilt; receiving an I/O command that is associated with the redundant storage device array, the I/O command including one of a read command or a write command; and executing the I/O command by using the recovery cache, wherein the redundant storage device array includes a plurality of storage regions, wherein any of the storage regions includes a respective portion of each of the plurality of storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.