Error: "Initial Sync Failed Unable to create dummy disk, A specified parameter was not correct" - Bulk Migration Failure

Products

• VMware HCX

Issue/Introduction

• Bulk Migration failed with an error.
• Migration was started with "Datastore default Storage Policy" selected.
• the following error was displayed in the HCX GUI:
  

  Initial Sync Failed Unable to create dummy disk, A specified parameter was not correct:

• The following error is displayed in the tasks on the destination vCenter Server:
  

   HCX Bulk Migration Failed. Unable to create dummy disk, A specified parameter was not correct:

• On the destination HCX Manager, messages starting with text like the following are displayed in the app.log:
  

  <TIMESTAMP> UTC [ReplicationTransferService_SvcThread-258, Ent: HybridityAdmin, , TxId: TxId: <TxID>] WARN  c.v.h.s.r.jobs.SetupTarget- Unable to create dummy disk. Task Response - (vim.TaskInfo) {
     dynamicType = null,
     dynamicProperty = null,
     key = <taskID>,
     task = ManagedObjectReference: type = Task, value = <taskID>, serverGuid = null,
     description = null,
     name = CreateVirtualDisk_Task,
     descriptionId = VirtualDiskManager.createVirtualDisk,
     entity = null,
     entityName = ,
     locked = null,
     state = error,
     cancelled = false,
     cancelable = false,
     error = (vmodl.fault.InvalidArgument) {
        faultCause = null,
        faultMessage = null,
        invalidProperty = null
     },
     result = null,
     progress = null,
     reason = (vim.TaskReasonUser) {
        dynamicType = null,
        dynamicProperty = null,
        userName = <UserName>
     },
     ...

Environment

VMware HCX

Cause

When migrating an unencrypted virtual machine, the error is caused by encryption being enabled in the default storage policy of the target datastore.

Resolution

Select a storage policy with encryption disabled using the following steps:

1. Open the Mobility Group edit dialog.
2. Select the target datastore.
3. Under "Select Storage Profile", select a storage profile with encryption not enabled.

Additional Information

Create a VM Storage Policy for Host-Based Data Services

If you have any questions, open a case with Broadcom Support.: Creating and managing Broadcom support cases.