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BugZero found this defect 1753 days ago.
During the snapshot removal operation that occurs at the end of a backup/replication job for a VM stored on a vVol Datastore, the following is observed: The Guest OS of the VM being processed is stunned or frozen. Monitoring software may report that the Guest OS is inaccessible due to a lack of ping response.
The snapshot removal process hangs as it waits for the volume to unbind on the ESXi host. This issue can occur with any ESXi configuration using vVols on vCenter 6.0 and later versions. This occurs when the following factors are combined: The VM being protected is on a vVol Datastore The Backup Proxy is a VM on a different host than the VM being processed. The Backup Proxy is using the Virtual Appliance (HOTADD) transport mode.
Below are two solutions for this issue. The first aligns with the recommended solution from VMware, which will require the creation of a Veeam Backup Proxy on every host in the cluster. The second solution does not require the creation of additional proxies and instead introduces a delay between hotadd disk release and snapshot removal request.