Home > Storage > PowerStore > Databases and Data Analytics > Dell PowerStore: Oracle Best Practices > Unified or block-optimized
If file services (NAS) are needed or might be needed later, select Unified during initial configuration. With unified storage configurations, some PowerStore compute and storage resources on the appliances are reserved for NAS.
If file services will not be required, choose block-optimized during the initial configuration of the PowerStore system.
Once PowerStore T is configured to support a particular storage configuration (Unified or Block Optimized), a reinitialization is required to change the configuration to the other storage configuration.
When defining a cluster, specify the name and select the required storage configuration.
Note: A PowerStore 5200T model appliance was deployed with a unified configuration for this paper (see the preceding figure).