Method, system, and program for caching data in a storage controller
US6775738B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | May 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/285
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method, system, and program for caching updates to one target storage device in a first and second memories, wherein the target storage device is one of a plurality of storage devices. A determination is made of an allocation of available space in the second memory to the storage devices, wherein a total of the allocation of the available space to all the storage devices exceeds one hundred percent of the available space in the second memory. An update to one target storage device is received and then a determination is made as to whether adding the update to the second memory will exceed the allocation of available space for the target storage device in the second memory. One copy of the update is written to the second memory if adding the update to the second memory will not exceed the allocation of available space for the target storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.