What would be the best way to ensure that batch Jobs do not impact performance of online queries that use the same database? 

Configure IORM to disable Flash Cache usage for batch workload. 

Build a Database Resource Management Plan, giving priority to query workload. 

Deploy Instance Caging to control batch jobs. 

Configure and enable Parallel Query. 

Configure resourceplans by using the I/O Resource Manager on the storage cells, giving priority to query workload.