What happens when vMotion occurs?

When vMotion Migration process occurs following background activities occurs:
  • When the vMotion Migration is initiated the virtual Machine’s memory is being copied from the source ESX/ESXi Server to the destination ESX/ESXi Server over the vMotion Network. The users will continue to have the access to the virtual machine, and the users updated memory pages would be stored in a bitmap image.
  • Once the active memory pages are being copied to the destination that the virtual machine will be quiesced for a couple of seconds to copy the bitmap image to the destination ESX/ESXi server.
  • When the virtual machine is quiesced and the bitmap image is copied to the destination ESX/ESXi, the virtual machine continues to run on the destination host.
  • The RARP notifies the subnet that the Virtual Machine MAC address has been connected to the new switch port.
  • Once the bitmap image is copied from the source to the destination ESXi host, the memory pages at the source ESXi would be freed.

About Alex Hunt

Hi All I am Manish Kumar Jha aka Alex Hunt. I am currently working in VMware Software India Pvt Ltd as Operations System Engineer (vCloud Air Operations). I have around 5 Years of IT experience and have exposure on VMware vSphere, vCloud Director, RHEL and modern data center technologies like Cisco UCS and Cisco Nexus 1000v and NSX. If you find any post informational to you please press like and share it across social media and leave your comments if you want to discuss further on any post. Disclaimer: All the information on this website is published in good faith and for general information purpose only. I don’t make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information you find on this blog is strictly at your own risk. The Views and opinions published on this blog are my own and not the opinions of my employer or any of the vendors of the product discussed.
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