The VMware HCX migration interface provides a set of options that can be used to tailor the behaviors and conditions of the virtual machine before or after the migration operation.

HCX has two types of optional settings for use when migrating virtual machines: Switchover and Extended.

Note: Available options depend on the selected migration type.

Switchover Options

Force Power-Off VM
By default, VMware HCX attempts to shut down the virtual machine guest gracefully during the VMware HCX Bulk migration operation. If the OS interrupts the termination process, the migration operation fails. Checking this option causes VMware HCX to force the power-off.
Remove Snapshots
Causes VMware HCX to consolidate snapshot files before migrating the virtual machine. If there are snapshots present, the system enables the option by default.
Force Unmount ISO Images
Causes VMware HCX to remove mounted ISO images before migrating the virtual machine.

Extended Options

Retain MAC
Causes a virtual machine to keep its current MAC address during VMware HCX bulk migration operation, allowing communications to resume gracefully, and allows for MAC-based security policies to be honored. This option is selected by default for vMotion and Replication Assisted vMotion migration types and is cannot be changed.
Upgrade Virtual Hardware
Allows VMware HCX to upgrade virtual machine Hardware to the latest supported version as part of the migration operation, making current virtual machine Hardware features immediately available to the migrated virtual machine.
Upgrade VMware Tools
Allows VMware HCX to upgrade VMware Tools to the latest supported version as part of the migration operation, making current VMware Tools features immediately available to bulk migrated virtual machine.
Deactivate Per Virtual Machine EVC
vSphere Enhanced vMotion Compatibility (EVC) ensures that workloads can be live migrated, using vMotion, between ESXi hosts in a cluster that is running different CPU generations. EVC is a cluster level setting that supports virtual machine mobility within a cluster. For virtual machines implementing per-VM EVC, the EVC mode becomes an attribute of the virtual machine rather than the specific processor generation it happens to be booted on in the cluster. If this option is selected then this virtual machine may not be able to vMotion back to the Source Site.
Host Name
Sets the host name of the migrated virtual machines at the destination site.
Domain Name
Sets the domain name for the virtual machine at the destination site. This option is available only with Linux virtual machines.
Personalization Script
Uploads a customization script to a migrated virtual machine. The script runs before and after guest customization. The customization script cannot exceed 1500 characters.
DNS Customization
Sets the Primary and Secondary DNS servers for the migrated virtual machine.
Generate a new Security Identifier (SID)
Generates a new Security Identifier (SID) for the migrated virtual machine. This option is supported only for Windows virtual machines. Please make sure virtual machine has an active "local administrator" present. If the virtual machine is connected to the domain, it will be moved to workgroup, and no DNS suffix is set.
Resize CPU
Changes the number of vCPUs for the migrated virtual machine. For more information about VMware virtual machine vCPU limitations, see the VMware vSphere product documentation.
Resize Memory
Changes the memory size for the migrated virtual machine. For more information about VMware virtual machine memory limitations, see the VMware vSphere product documentation.
Replicate Security Tag

Replicates VMware NSX-V and NSX-T security tags associated with a virtual machine undergoing migration. The security tags are replicated from the source site to the destination site.

Migrate Custom Attributes
Migrates VMware Custom Attributes associated with a virtual machine undergoing migration. The Custom Attributes are replicated from the source site to the destination site. Custom Attributes are migrated to the destination site without the user-specific values of the Custom Attributes.

The following table summarizes the extended options that apply to each migration type.

Extended Option Cold Migration vMotion Migration Bulk Migration Replication Assisted vMotion Migration OS Assisted Migration
Retain MAC No Yes (default setting; not selectable) Yes Yes (default setting; not selectable) Yes (default setting; not selectable)
Upgrade Virtual Hardware Yes Yes (upgrades on reboot) Yes Yes N/A
Upgrade VMware Tools No Yes Yes Yes N/A
Deactivate Per-VM EVC No Yes No Yes N/A
Hostname No No Yes No No
Domain Name No No Yes No No
Personalization Script No No Yes No No
DNS Customization No No Yes No No
Generate a new Security Identifier (SID) No No Yes No No
Resize CPU No No No No Yes
Resize Memory No No No No Yes
Replicate Security Tags Yes Yes Yes Yes N/A
Migrate Custom Attributes No Yes No No N/A