Unable to restore a deleted VM from backup - This server is suspended

Symptoms 

The backup restoration process fails with the error:

SVM_ERROR: Unable to restore a deleted VM from backup - This server is suspended

Cause

The VM was suspended before deletion.

Resolution

1. Connect to the Management node via SSH. 
2. Create a Management node backup:

/usr/local/solus/bin/installer -backup

3. Access the Management Server database
4. Run the following command:

update compute_resource_vms set is_suspended=false where deleted_at is not null;

Once completed, the deleted VM can be restored from backup.