Virtual machine smart migration
US8806480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2007 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Aug 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/4557
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Migration mechanisms are disclosed herein that smartly transfer data among virtual machines, minimizing the down time of migration of such machines but maximizing the consistent state of data stored thereon. Specifically, data can be classified into three types: low volatility data (such as hard disk data), high volatility data (such a random access memory data), and immutable data (such as read only data). This data can be migrated from a source virtual machine to a target virtual machine by sending the immutable data along with the low volatility data first—before the source virtual machine has stopped itself for the migration process. Then, after the source virtual machine has stopped, high volatility data and (again) low volatility data can be sent from the source to the target. In this latter case, only differences between the low volatility data may be sent (or alternatively, new low volatility data may be sent).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.