Error log analysis indicates a hardware failure.
Error log analysis indicates a hardware failure. On Andrew's suggestion I've run errpt on various machines and found that only s1n02 logged disk problems. The call number is 7FYB . Consequently, I have backed up disks 0 an 2 on s1n02 following the procedure described below. The disk backup procedure On Greg's suggestion I have used the volume backup procedures, i.e., mksysb for the rootvg volume on hdisk0 and savevg for the user1vg volume on hdisk2 .