Distributed multi-level protection in a RAID array based storage system
USRE48448E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2018 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Mar 9, 2038 |
Classification
- Technology area (CPC —)General
Abstract
A system and method for dynamic RAID geometries. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array is configured to configure a first subset of the storage devices for use in a first RAID layout, the first RAID layout including a first set of redundant data. The controller further configures a second subset of the storage devices for use in a second RAID layout, the second RAID layout including a second set of redundant data. Additionally, when writing a stripe, the controller may select from any of the plurality of storage devices for one or more of the first RAID layout, the second RAID layout, and storage of redundant data by the additional logical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.