An administrator has virtualized four database servers in a private cloud. The DBA is concerned that a failure of one host will take down all four servers. Which of the following should the administra

Installing a load balancer distributes incoming network traffic among servers but does not control their physical host placement, thus it does not prevent a single host failure from affecting multiple VMs. This is a networking solution, not a host placement solution.

Anti-affinity rules configure the virtualization platform to distribute specified virtual machines across different physical hosts, preventing them from running on the same server. This directly addresses the DBA's concern by ensuring that a failure of one physical host will not simultaneously impact all four database servers, thereby enhancing high availability.

Defining affinity rules would force virtual machines to run on the same host or a specific group of hosts, which would worsen the single point of failure problem the DBA is concerned about.

Migrating servers to a public cloud is a significant architectural change that is not the immediate first step to address a host failure concern within an existing private cloud environment. It's a much broader decision than configuring VM placement.