Data storage system and method of hierarchical control thereof
US6779078B2 · kind B2 · utility
46Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Feb 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2206/1012
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of selecting logical volumes that are the targets for data migration to equilibrate the load on a system, based on the accessing data of the physical drives and logical drives under the disk array controllers, without increasing the load of the disk array controller. An external manager communicates with two or more disk array controllers, gathers and manages the access data and the configuration data relating to the physical drives and logical volumes of each disk array controller, and prepares an optimum data migration instruction to equilibrate the access load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.