HCX 9.0 Migrations do not progress: "Storage not accessible error observed"

Products

• VMware HCX

Issue/Introduction

• HCX Migrations do not progress during "Initial Sync in Progress".
• From the "Events" tab, you observe the following event: "Storage not accessible error observed".

• Running the HCX Diagnostics from the Service Mesh reveals no port blocks/errors.
• The following error is also observed in /common/logs/admin/app.log
  <timestamps> UTC [ReplicationTransferService_SvcThread-2394, Ent: DEFAULT, , TxId: #######-####-####-#######] INFO  c.v.h.s.r.j.ReplicationTransferMonitor- Received Accessibility violation event for the transfer '#######-####-####-#######': {"reason":"No accessible host for datastore is found for syncing, please check communication between HBR and Host"}

Environment

VCF Operations HCX 9.0

Cause

• This issue was caused due to an old script on the KB: HCX Error Connecting To HBR Server. Reason: HttpHostConnectionException 
• If this is not the case, troubleshoot the port 902 (from IX-R -> ESXi host 902).

Resolution

• This issue is typically caused when port 902 is not open on the target side.
• If no issues are identified in the HCX Diagnostics, please open a support case with Broadcom Support and refer to this KB article.
  For more information, see Creating and managing Broadcom support cases.

Additional Information

• To run HCX Diagnostics, navigate to Interconnect > Service Mesh in the HCX manager UI, select your Service Mesh, and click Run Diagnostics to test network connectivity