Data storage system recovery from disk failure during system off-line condition
US7171518B2 · kind B2 · utility
2Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Mar 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for returning a logical volume which is part of a redundant data storage system to on-line status following a disk failure within the logical volume during the time when another of that volume's disks is unavailable as a result of having its firmware updated, as an example. Data which would otherwise be changed in the logical volume due to host write requests is directed to a logging facility within the data storage system, but outside of the logical volume undergoing upgrade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.