VM Resource migration Process

How resource migration happens in VMware vSphere

You can migrate the virtual machines from one host to another basis on the requirement without downtime. Now, this article explain the migration process under vSphere. Through this process machine Datastore will remain same w.r.t. (Virtual machines associated files & disks) however host will be changed. This can be automated through DRS or can be manual process and this whole process works in three phases.

1. vCenter varify the health of Virtual Machine (Compatibility check like; CPU family, Access of target datastores, Standard and DB Switch (Network) and Vmotion configurations.

2. The memory, registers, and network connections are copied to the target host (virtual machine state)

3. Virtual Machines resumes its operations on new host.

Migration is very simple process, follow the below process for resource migration.

​Right click on Virtual Machines which you wish you migrate and select migrate option

1. Choose "Change Compute resource only" option and select Next to finish.

vSphere will initiate the process as per above process and move the virtual machine from one host to another without any downtime. For end user, machine will be active and working with good state.