Method and system for striping spares in a data storage system including an array of disk drives
US6934804B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 2002 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jul 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for striping spare storage in a data storage system. Specifically the present invention describes a method and apparatus for storing data and spare storage in a data storage system having a plurality of physical storage devices. The plurality of physical storage devices is partitioned into a plurality of slices. Logical units of storage (LUNs) are created, wherein each LUN contains data, spare, and data redundancy. Each of the plurality of slices is assigned to one of the plurality of LUNs so as to distribute storage of data, data redundancy, and spare across all of the plurality of physical storage devices. Distribution of spare storage is concentrated at the inner zone of each of the plurality of physical storage devices. The data and spare storage can be distributed uniformly or with varying granularities across all of the plurality of physical storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.