In a Storage Spaces Direct deployment, which tool should you use to view the available storage in a Storage Spaces Direct storage pool?

Failover Cluster Manager is the correct tool because it provides a centralized interface for managing all aspects of a Windows Server Failover Cluster, including Storage Spaces Direct (S2D). Within Failover Cluster Manager, you can navigate to the "Storage" section and then "Pools" to view detailed information about the S2D storage pool, including available capacity, used capacity, and health status. System Configuration (msconfig) is used for managing startup options and services, not storage. File Server Resource Manager (FSRM) is for managing file quotas, screening, and reporting on file servers, not for viewing S2D pool capacity. The Get-StorageFileServer cmdlet is not a valid PowerShell cmdlet for managing S2D storage pools; the correct cmdlets would be Get-StoragePool or Get-VirtualDisk.