Home > Workload Solutions > SQL Server > Guides > Design Guide—SQL Server 2022 Database Solution with Object Storage on Dell Hardware Stack > Container design
The Dell CSI plugin allows for the creation of persistent volumes based on the storage’s LUNs in the PowerStore storage pool. It is required that the proper storage class is established for Dell CSI. This serves as the storage for the Microsoft SQL Server 2022 container instances and is where the local tables are stored. External tables are created using data found in the ECS Cluster using PolyBase for Microsoft SQL Server and the S3 for ECS. Data is contained entirely in ECS data buckets within a namespace. This data can be accessed and modified without being stored in the Microsoft SQL Server instance.