Limiting the time that I/O to a logical volume is frozen
US11048420B2 · kind B2 · utility
1Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2019 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
At the start of an I/O cutover process that changes host computer access to a logical volume from a source data storage appliance to a destination data storage appliance, and during which processing of host I/O operations directed to the logical volume is frozen, at least one I/O freeze timer is set. In response to expiration of the I/O freeze timer, and prior to completion of the I/O cutover process, processing of host I/O operations directed to the logical volume is resumed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.