Unable to change placement solution to Replication Tracking for an existing replication.

Products

• VMware Cloud Director

Issue/Introduction

• When configuring a VM/vApp protection the Placement Solution is ''Independent Disk'.
• It is not possible to configure Replication Tracking as placement solution as the option it's grayed out and the below message is shown:
  
  Inapplicable:
Replication Tracking VM feature is not supported by the selected site

• VMware Cloud Director is on version 10.5.1 or later.
• VMware Cloud Director Availability is on version 4.7 and later.

Environment

VMware Cloud Director Availability 4.7.x
VMware Cloud Director 10.5.x
VMware Cloud Director 10.6.x

Cause

The use of Replication Tracking Virtual Machines (RTVMs) is disabled on the affected site.

Resolution

Enabling the Replication Tracking Virtual Machines:

1. SSH the Replication Manager appliance for the affected site.

2. Take a backup of the file /opt/vmware/h4/cloud/config/application.properties running the command below:

   cp /opt/vmware/h4/cloud/config/application.properties /opt/vmware/h4/cloud/config/application.properties.back

3. Edit the file with a text editor (e.g., vi)

4. Change the property vcd.rt.vms from false to true:
   
   vcd.rt.vms=true

5. Save the changes to the file.
6. Restart the cloud service:
   
   systemctl restart cloud.service

Additional Information

All new replications automatically use RT VM when using VMware Cloud Director 10.5.1 or later and VMware Cloud Director Availability 4.7 and later.
For additional information visit the documentation Replication tracking placement solution