vSphere replication-Cannot retrieve replication disk space requirement: Failed to serialize response
This article describes how to troubleshooting the issue.
Issue: "Cannot retrieve replication disk space requirement: Failed to serialize response"
Recently I encountered the issue, while configuring the VM to vSphere replication side.
Cause: HBR (vSphere replica) doesn't support upper case vmdk files.
for example (os.VMDK) it should be (os.vmdk)
Workaround solution:
> Added new 1 GB disk into vm from vCenter.
> Now configure the VM while choosing single disk (which was added 1 GB).
> Once configured, now you choose reconfigure the VM and configure all disks respective target datastores.
> Now it works.
Permanent solution:
As per the logs, our vmdk files are upper case like (.VMDK) it should be lower case.
> HBR (vSphere replica) doesn't support upper case vmdk files.
How to Convert vmdk files Uppercase to lower case.
> Remove the VM from vSphere replication side (Don't choose seeds now)
> it should be clean up entire storage.
> Reconfigure the VM again.
> It's working now after modified the vmdk files.
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