Home > Storage > PowerStore > Databases and Data Analytics > Dell PowerStore: Microsoft SQL Server Best Practices > Hosts and host groups
Physical SQL Server hosts are connected to PowerStore by adding a host object in PowerStore. The host object contains the storage initiators on the host to enable storage presentation.
Host groups allow multiple hosts with the same storage connectivity to be grouped together. Once a host group is created, volumes can be connected to the host group to simplify host mapping. Also, performance metrics can be viewed at the host group level, which provides another level of insight into storage performance. This is useful with SQL Server Failover Cluster Instances where the SQL workload may move across several physical hosts.