What must be done to prevent Deep Security Virtual Appliances from being migrated automatically in VMware?

To prevent Deep Security Virtual Appliances from being migrated automatically in VMware, setting the Distributed Resource Scheduler (DRS) to Manual or Disabled is essential. DRS is a feature in VMware that allows for automatic load balancing of virtual machines across multiple hosts within a cluster. When DRS is enabled and set to Automatic, it can move virtual machines, including Deep Security Virtual Appliances, to optimize resource usage. By changing the setting to Manual or Disabled, you ensure that the virtual appliances remain on the designated host and are not subject to automatic migration decisions made by the DRS, which is crucial for maintaining the consistent security posture and management of those appliances.

Other options, such as enabling automatic migration settings or disabling High Availability features, do not directly impact the DRS behavior. Increasing the virtual machine resource limits may improve performance but would not prevent migration. Hence, adjusting the DRS settings specifically addresses the need to control the placement and migration behavior of virtual appliances in the VMware environment.