Data migration without interrupting host access and with data lock for write access requests such that held write access requests do not expire
US8341459B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jan 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2092
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system includes a source storage device, a target storage device, a host coupled to the source storage device and the target storage device, and a first migration device coupled to the source storage device and the target storage device. The first migration device includes a first virtual storage device. The first migration device is configured to migrate data from the source storage device to the target storage device, and the first virtual storage device is configured to receive write access requests for the data from the host during the data migration and send the access request to the source storage device and target storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.