HCX OSAM Migration fails with the error "Failed to create migrated VM. Number of virtual devices exceeds the maximum for a given controller"

Products

• VMware HCX

Issue/Introduction

• In the HCX Manager UI > Migration > Mobility Groups > Select the affected Mobility Group, the following error is seen:
  
• The following error is observed in /common/logs/admin/app.log:
  <timestamp> UTC [OsAssistedMigrationService_SvcThread-2122, Ent: HybridityAdmin, , TxId: ########-####-####-####-############] INFO  c.v.v.h.s.migration.jobs.CreateVMJob- getNICs() # of nics: ## migrationId: ########-####-####-####-############
...
<timestamp> UTC [OsAssistedMigrationService_SvcThread-2118, Ent: HybridityAdmin, , TxId: ########-####-####-####-############] ERROR c.v.v.h.s.migration.jobs.CreateVMJob- Failed in executing subworkflow Instantiate VM workflow - Number of virtual devices exceeds the maximum for a given controller. migrationId: ########-####-####-####-############
  
  

Cause

The source virtual machine is configured with more virtual devices than allowed for that device type. The ESXi host will not initiate the virtual machine.

 

Resolution

Review the virtual machine hardware and make sure that it matches the ESXi host Configuration Maximums.