The ParaStation Healthchecker as part of the ParaStationV5 cluster suite is an elaborated test suite to ensure the usability of compute and services nodes and the system in general of a compute cluster. It includes a framework to define and run a set of pre-defined tests. Each particular test analyzes a particular function on the node or within the system. It returns a single state, which might be OK, WARNING or FAILED. Each test is optimized to very fast analyze in a non-destructive way an aspect of the system. Tests may use all available information. This include in particular tools for reading the state of RAID controllers, reading operating system parameters, IPMI or SNMP queries, and more.