Storage system
US8819371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2012 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Nov 13, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7203
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an exemplary storage system, a processor assigns an unused process to a read request designating an area of a logical volume. The processor determines whether the data designated by the read request is in a cache memory, based on a first identifier for identifying the area designated by the read request. When the designated data is not in the cache memory and a part of physical volumes providing the logical volume is a first kind of physical volume, the processor stores the first identifier associated with an identifier for identifying an area allocated in the cache memory. When the designated data is not in the cache memory and a part of the physical volumes is a second kind of physical volume, the processor stores a second identifier for identifying the process assigned to the read request associated with an identifier for identifying an area allocated in the cache memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.