Sanjuro,
You will need to upgrade Snapcenter to 4.2 first.
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Login to the Snapcenter Web Page - Select settings - Credentials
Select New
Credential Name : <virtual name>
Username :
< this is the admin user name that you configured for your NDB while deploying OVA.
The last screen where you provide Vcenter Credentials first and then the user account for NDB. You need to use that account>
Password:
Authentication Method : Linux
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invoke-SCVOVAMigration -SourceSCVHost old-SCV-host-IP -DestinationSCVOVAHost new-OVA-IP -OVACredential <Virtual Name> -ByPassValidationCheck -Overwrite -ContinueMigrationOnStorageError -ScheduleOffsetTime time-offset
For the OVACredential, please specify the Virtual username that you just created
Regards