Storage system and storage management method
US12282670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2021 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Nov 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a storage system and a storage management method, aiming at reducing data movement amount necessary for using an expanded capacity in a distributed RAID. When only A (A is a positive integer) physical storage drives are added, a storage controller selects virtual parcels that are mapped to different physical storage drives among N physical storage drives and are included in different virtual chunks, changes an arrangement of the selected virtual parcels to the added A physical storage drives, and constitutes a new chunk based on unallocated virtual parcels selected from different physical storage drives among the (N+A) physical storage drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.