System and method for write forwarding in a storage environment employing distributed virtualization
US7389393B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | May 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for write forwarding in a storage environment employing distributed virtualization includes a first and a second storage server providing access to a first and a second physical storage device, respectively, a virtual device server and a virtual device client. The virtual device server may be configured to aggregate storage in the first and second physical storage device into a virtual storage device and make the virtual storage device accessible to the virtual device client for I/O operations. An update requested by the virtual device client may require a first physical write operation at the first physical storage device and a second physical write operation at the second physical device. The virtual device client may be configured to send an update request to the first storage server, rather than to both the first and the second storage servers. The first storage server may respond to the update request by starting the first physical write operation, and forwarding a request for the second physical write operation to the second storage server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.