Detent PointTest-Cluster is a built-in Windows Server cmdlet, part of the FailoverClusters module. It runs the same validation wizard used before creating a failover cluster: network configuration, storage, and system configuration checks, run against the candidate nodes to confirm they’re fit to form a cluster.
It’s a real, useful tool, and it’s the right first step before you build a cluster or when Microsoft support asks for a validation report. It’s a one-time (or on-demand) check, general-purpose across any Windows Server role riding on the cluster.
ClusterValidator isn’t a replacement for Test-Cluster and doesn’t try to be. It’s built for the cluster that already exists and is already running a SQL Server Failover Cluster Instance: automated health validation you run on your own schedule instead of only before a build or after something breaks, with checks aimed specifically at what an FCI needs — network configuration, storage and quorum, shared witness, and diagnostic reports scoped to SQL Server itself.
Every check is read-only. Nothing on your cluster gets changed, and the report tells you exactly what it found.
No credit card and no contract. Validate your FCI configuration and see what turns up.
Windows Server 2016, 2019, and 2022 environments running a SQL Server Failover Cluster Instance.