Storage system with a data sort function
US7032085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Jun 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0862
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system, which can execute sort processing of data without affecting online service, is disclosed. A storage control device 12 receives a sort instruction specifying a record group for sorting and a sort key from a host device 1, reads the record group from an external storage device 11 into cache memory 123, and uses the cache memory 123 and a work area secured in the external storage device 11 to execute sort processing of the above record group, and again stores the sorted record group in a prescribed output area within the external storage device 11. When a plurality of sort instructions are received, work areas are allocated automatically without overlapping work areas. When record updates occur during online service, a snapshot of the updated records is taken, and sorting of the snapshot is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.