System and method for write-back cache in sparse volumes
US8601214B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jan 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/264
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The techniques introduced here provide for a write-back sparse volume cache in a storage system. The write-back sparse volume cache is implemented by a first storage server that is connected to communicate with a second storage server that hosts the origin storage volume. The first storage server receives a write request from a client to write data to the origin storage volume. In response to receiving the write request, the first storage server writes the data to the sparse volume cache maintained by the first storage server and acknowledges to the client a successful write operation. The data is maintained in the sparse volume cache such that the presence of the data in the sparse volume cache is transparent to the client and subsequent requests for the written data are serviced by the first storage server from the sparse volume cache. The data can later be flushed to the origin storage volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.