Live migration outside a clustered environment

In order to bring the host server offline for maintenance and also to maintain optimal use of physical resources, you must be able to move virtual machines without disrupting the business. Windows Server 2008 R2 introduced live migration, which made it possible to move a running virtual machine from one physical computer to another with no downtime and no service interruption.

Windows Server 2012 enhanced the migration feature. Live migration in windows 2012 is no longer limited to a cluster. Virtual machines can be migrated across cluster boundaries, including to any Hyper-V host server in your environment.

Windows Server 2012 Hyper-V live migration lets you perform live migration outside a failover cluster. The two scenarios for this are:

SMB-based live migration. In this scenario, the virtual machine’s hard disk is stored on a central SMB file share. You may then perform a live migration of the virtual machine from one server to another while their storage remains on the central SMB share.

“Shared-nothing” live migration. In this case, the live migration of a virtual machine from one non-clustered Hyper-V host to another is possible when the virtual machine’s hard drive storage is mirrored to the destination server over the network.  The storage mirroring can be done through any third party storage replication technique. Now you may perform the live migration of the virtual machine from source server to the destination server while it continues to run and provide network services.

In both the cases, the virtual network configuration should be identical.

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About Jayachandran PK
My passion is for Microsoft technologies and how if properly implemented, they can provide actual value for an organization especially in the field of infrastructure, virtualization and system monitoring. I work for the biggest Microsoft partner in Kuwait, specialized in project consultation and implementation services for enterprise clients. When I'm not at work, I try to contribute back through a charitable organization dedicated to prompting cultural values of Kerala. In my free time, I dabble in gardening and am also an avid solar power aficionado.

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