VMRSDA, the System DASD Analysis utility, maps your VM DASD system, including all CP-reserved areas, and identifies potential problems. VMRSDA is the only mapping utility that provides comprehensive information about your system, including CP-reserved areas such as spooling, paging, and saved systems. Unlike conventional mapping procedures, VMRSDA maps CP-reserved areas by reading volume allocation records and the CP nucleus on the system IPL volume, as well as other CP data areas and control blocks.
VMRSDA also validates your DASD; for example, it checks for sufficient expansion area for your CP nucleus and alerts you to any overlaps. These validations follow standard VM system programming practices and make VMRSDA more powerful and useful than conventional DASD mapping utilities.
The information provided by VMRSDA complements that produced by VMRMUA.