63150: Acronis Backup Cloud: backup locks clustered VM

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Applies to: 

Symptoms

You have a Hyper-V cluster with Cluster Shared Volumes (CSV). You have a clustered VM on this CSV volume.

You are using agentless backup for virtual machines.

Once an Acronis job runs on the host, any attempt to redirect Cluster Shared Storage (CSV) volumes to that host result in the volume going into ‘Online (Redirected Access)’ status.

Cause

The issue is under investigation.

Solution

Acronis development team is working on the issue. This article will be updated once a fix is available.

As workaround, install Acronis agents into the guest operating systems of your virtual machines.