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Changes to vMotion in vSphere 4.1 (1022851)

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Purpose

This article describes the changes to vMotion in vSphere 4.1.

Resolution

In vSphere 4.1:
  • Migration with vMotion and DRS for virtual machines configured with USB device passthrough from an ESX/ESXi host is supported
  • Fault Tolerant (FT) protected virtual machines can now vMotion via DRS. However, Storage vMotion is unsupported at this time.

    Note: Ensure that the ESX hosts are at the same version and build.
In addition to the above, vSphere 4.1 has improved vMotion performance and allows:
  • 4 concurrent vMotion operations per host on a 1Gb/s network
  • 8 concurrent vMotion operations per host on a 10Gb/s network
  • 128 concurrent vMotion operations per VMFS datastore

Note: Concurrent vMotion operation is currently supported only when source and destination hosts are in the same cluster. For more information, see the Configuration Maximums for VMware Sphere 4.1 Guide.

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