Hi Rick,
Hope you're doing well.
As far as I know, there are a few known issues with Storage Replica that could cause the data volume not to come online when the direction is switched. One of the possible solutions is to clear the hidden Storage Replica partition off the disks and return them to a writeable state using the "Clear-SRMetadata" cmdlet.
And we can switch the direction of replication using the "Set-SRPartnership" cmdlet.
If the command hangs, it could be due to insufficient system resources or other issues. You can check the event log for any error messages or warnings.
Here are some relevant documents for you reference:
Clear-SRMetadata (StorageReplica) | Microsoft Learn
Set-SRPartnership (StorageReplica) | Microsoft Learn
Known issues with Storage Replica | Microsoft Learn
Hope this helps!
Best Regards,
Ian Xue
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