Updating CP Define your input unit as the address of your system residence device. Your output unit is the tape (181) that is attached to your virtual
machine. When you enter the DUMP statement with the NUCLEUS operand,
DDR creates a copy of the nucleus that was just loaded.
The sequence of commands and responses is:
def cuu as 009 CONS 009 DEFINED
ipl cms CMS ••• mm/dd/yy
ddr
ENTER: in 330 3330 sysres
ENTER: out 181 2400 ENTER: dump nuc DUMPING SYSRES END OF DUMP ENTER:
END OF JOB R; T=0.21/2.63 15:04:04 You created a backup copy of the CP nucleus. This copy may later be
restored using the standalone version of the DDR program on the real
machine. Part 5. Updating 347

348 IBM VM/370 Planning and System Generation Guide