Unobtrusive Virtual Server Data Protection According to ESG, 'Asigra's approach to protecting virtual server environments offers several advantages when compared to traditional backup solutions. For organizations that have deployed server virtualization in production environments, a majority are placing a backup client agent in the host or guest OS. While these approaches most closely reflect how backup was performed in the physical world (and therefore is simple to understand and configure), they place unnecessary strain on the host?s resources compared with an agentless approach. Agentless backup also eliminates the need to configure agent technology in every virtual machine, as with traditional approaches.'