The HCX Migration Management interface provides a summary of group migration progress, the progress of individual virtual machines in the group, migration phase transfer estimates for Bulk and Replication Assisted vMotion migration types, and relocation phase transfer estimates for vMotion migrations.

The Migration Management page displays the status and progress for all types of virtual machine migrations. While migrations are underway, the Progress column displays a progress bar with the percentage of replication completed for the group, along with the number of migrations completed.

Expanding a group entry displays information about each virtual machines in the group. For Bulk and Replication Assisted vMotion (RAV) migrations, this includes real-time estimates regarding the migration transfer phase. For vMotion migrations, this includes real-time estimates regarding the relocation phase. Real-time estimation gathers information from the current migration environment. This estimate is based on sampling the underlying metrics of the environment, such as bytes transferred, rate of transfer, network throughput, and number of disks. Changes in the underlying metrics can impact the estimate. The interval between estimates varies with the size of the migrated virtual machine:

Virtual Machine Size

Estimate Interval

Less than 50 GB

Every 1.5 minutes

Greater than or equal to 50 GB but less than 1 TB

Every 5 minutes

Greater than or equal to 1 TB

Every 15 minutes


The estimate interval begins after the system has gathered the underlying metrics and completed calculations, meaning there may appear to be a delay in presenting the initial estimate. For relatively small transfers, the transfer may complete before providing an estimate.

For Bulk and RAV migrations, HCX provides predictive estimates for Mobility Groups in Draft state. Predictive estimation uses historical data from completed migrations in combination with machine learning (ML) to estimate the transfer phase.


Predictive estimation has the following requirements:

  • At least 50 successfully completed migrations. Predictive estimates for both forward and reverse migrations requires at least 50 successful migrations in each direction.

  • The Mobility Group is in Draft state.

  • The Mobility Group has been validated successfully.

  • Migration prediction is available only for datastores and IX appliances that have participated in the previous migrations to train the ML model.


  1. Navigate to Services > Migration > Management .

    The Migration Management window displays Mobility Group information for each site pair. The window displays both forward and reverse migration information.

  2. Review the progress column to view the status or see estimates related to migration.

    For detailed information, expand each virtual machine migration entry in the group.

    • For Bulk and Replication Assisted vMotion migrations, the Progress column provides a best-effort, real-time estimation of the time required to complete the transfer phase for a specific virtual machine. For vMotion migrations, the Progress column provides a real-time estimate to complete the relocation phase.

    • For groups of Bulk or RAV migration entries that are in Draft state, the Progress column optionally provides a predictive estimate of the time required to complete the transfer phase for a specific virtual machine. To initiate predictive estimates on the draft entries in the group, click the Get Predictions icon from the group management selections after expanding the group.

      For each estimate in the Progress column, an information icon provides the prediction details and a timestamp for the most recent prediction.

  3. To display a list of all virtual machine migrations and migration progress, click the Tracking tab.

    The Migration Tracking page provides a list of all ongoing or recent migrations regardless of group.

    Sort the tracking information using the filter option provided in each column heading. You can search by virtual machine name, state message, migration type, or other attributes.

  4. To return to the Migration Management window, click the Management tab.