PFA_COMMON_STORAGE_USAGE is a remote check that evaluates the common storage use of each system. PFA, running in its own address space, periodically collects common storage area (CSA + SQA) data from the system on which the check is running. The check writes the CSA usage data, at intervals, to a z/OS® UNIX file. The check identifies a list of common storage users that are abnormal and that might contribute to exhausting common storage. PFA issues an exception message to alert you if there is a potential common storage problem and provides a list of suspect tasks. You can then examine the list and stop the cause of the potential problem or move critical work off the LPAR.