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Each cluster has a primary appliance which is the first appliance that is selected during the initial configuration. For PowerStore T/Q model appliances, the primary appliance can be configured in unified mode or block-optimized mode during the initial configuration process. Starting in PowerStoreOS 2.0, the primary appliance is automatically selected by the operating system for Block-optimized clusters.
The following figure shows an example of an appliance with unified mode selected. File services only run on the primary appliance of a unified cluster. If an appliance uses file services, ensure that the Storage Configuration field has Unified mode selected. If an appliance only uses block workloads such as iSCSI, FC, NVMe/TCP, or NVMe/FC, ensure that the Storage Configuration has Block Optimized mode selected.
Note: You cannot change the configuration type (Unified or Block Optimized) of an appliance after the cluster is configured.