Dynamic selection of spare storage element types in array
US8874494B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3409
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved technique for replacing storage elements in a redundant group of storage elements of a storage array dynamically selects a storage element type from among multiple candidates based on which storage element type produces the greatest service level of the redundant group. The technique includes selecting one of multiple storage element types using a random selection process that can be biased to favor the selection of certain storage element types over others. A storage element of the selected type is added to the redundant group. The selected storage element type is then rewarded based on the service level that results from adding the storage element of the selected type. The selection process is repeated, and a newly selected storage element type is put into use. Operation tends to converge on an optimal storage element type that maximizes the service level of the redundant group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.