Storage system and data processing method
US10120601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2014 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Jul 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
It is provided a storage system, comprising: a first storage device; a second storage device higher in I/O performance than the first storage device; a data amount reducing part configured to reduce a data amount of write data from a host computer; and a controller. The controller is configured to: change the storage area that is allocated to the specified logical area to a relocation destination storage area; manage an I/O load of the data and a reduction ratio of the data requested by the write request from the host computer to be written; determine whether or not data relocation is necessary by using the load per capacity reduction unit that is based on a size of the data reduced by the data amount reduction unit; and relocate the data that is determined as needing relocation between the first storage device and the second storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.