Data allocation in a distributed storage system
US7908413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2003 |
| Grant date | Mar 15, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2206/1012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for data distribution, including distributing logical addresses among an initial set of devices so as provide balanced access, and transferring the data to the devices in accordance with the logical addresses. If a device is added to the initial set, forming an extended set, the logical addresses are redistributed among the extended set so as to cause some logical addresses to be transferred from the devices in the initial set to the additional device. There is substantially no transfer of the logical addresses among the initial set. If a surplus device is removed from the initial set, forming a depleted set, the logical addresses oldie surplus device are redistributed among the depleted set. There is substantially no transfer of the logical addresses among the depleted set. In both cases the balanced access is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.