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IBM POWER6 partition mobility: moving virtual servers seamlessly between physical systems

Published: 01 November 2007 Publication History

Abstract

This paper presents the IBM Power Architecture extension for enhanced virtualization that is first implemented in the POWER6™ processor. Virtual partition memory enables all of the memory of a virtual server running in a logical partition to be made virtual by the POWER Hypervisor firmware. The Processor Compatibility register allows backward compatibility by providing a mode in which a POWER6 processor behaves like a POWER5™ processor. Enhancements to the timebase facility enable updates to the virtual timebase of a logical partition while maintaining consistency with other partitions in the system. These fundamental enhancements are explained and their role in implementing the new partition mobility junction is described. Partition mobility allows the seamless migration of virtual servers from one physical POWER6 microprocessor-based system to another.

References

[1]
1. Power.org, "Power Architecture Platform Requirements"; see http://www.power.org/members/developers/specs/PAPR (registration required).
[2]
2. W. J. Armstrong, R. L. Arndt, D. C. Boutcher, R. G. Kovacs, D. Larson, K. A. Lucke, N. Nayar, and R. C. Swanberg, "Advanced Virtualization Capabilities of POWER5 Systems," IBM J. Res. & Dev. 49, No. 4/5, 523-531 (2005).
[3]
3. IBM Corporation, "Logical Partition Security in the IBM eServer pSeries 690," white paper; see http://www.ibm.com/ servers/eserver/pseries/hardware/whitepapers/lpar_security.html.
[4]
4. Power.org, "Power ISA™ Version 2.04"; see http:// www.power.org/resources/downloads/PowerISA_203.Public.pdf.

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Information & Contributors

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Published In

cover image IBM Journal of Research and Development
IBM Journal of Research and Development  Volume 51, Issue 6
November 2007
147 pages

Publisher

IBM Corp.

United States

Publication History

Published: 01 November 2007
Accepted: 06 February 2007
Received: 09 January 2007

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  • (2011)Improving server utilization using fast virtual machine migrationIBM Journal of Research and Development10.1147/JRD.2011.216777555:6(365-376)Online publication date: 1-Nov-2011
  • (2008)IBM power systems platformIBM Systems Journal10.1147/SJ.2008.538651747:4(519-533)Online publication date: 1-Oct-2008
  • (2007)IBM POWER6 microarchitectureIBM Journal of Research and Development10.1147/rd.516.063951:6(639-662)Online publication date: 1-Nov-2007

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