Multi-BCRC raid protection for CKD
US11256447B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2020 |
| Grant date | Feb 22, 2022 |
| Priority date | — |
| Expiry date | Oct 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage array that presents a logical storage device to hosts that is accessed using front-end tracks and access tangible managed drive using back-end tracks locates multiple front-end tracks in individual back-end tracks. Error-correcting codes are used to identify different front-end tracks in a back-end track when the back-end track is copied from the managed drives into storage array memory. CKD front-end tracks can be split into multiple partial CKD front-end tracks that are located at contiguous address space in different back-end tracks. The front-end tracks that are located in a particular back-end track may be selected to reduce or minimize unused space. The front-end tracks in a back-end track may be logically stored on different production volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.