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PowerStore X model ESXi nodes are designed to work with VMware Distributed Resource Scheduler (DRS). During initial configuration of the PowerStore X model appliance, the appliance automatically enables DRS in partially automated mode. Partially automated mode automatically applies DRS for initial VM placement and makes suggestions for load balancing, which the administrator can initiate.
Because the appliance is optimized for and expects this configuration, changing the DRS automation level is not supported. The DRS Monitoring Service polls vSphere every 15 seconds and confirms that the DRS automation level is set to partially automated. If a change is detected, it automatically heals by reverting the automation level back to partially automated.
Starting with PowerStoreOS 1.0.3, vSphere ROBO licenses can be installed on PowerStore X model nodes. vSphere ROBO Advanced licenses do not support DRS; vSphere ROBO Enterprise licenses only support DRS for entering maintenance mode. Before you install a ROBO license on a PowerStore X model node, you must disable DRS on the ESXi cluster. When using a vSphere ROBO license, the user must manually initiate VM load balancing.