AIX Alt_disk_copy : how to make mirror disks to one alter disk backup.

AIX Alt_disk_copy : how to make mirror disks to one alter disk backup.
edit the image.data file to have one copy.
reduce the PP size to half.
delete mirrored disk name in the file.

/usr/sbin/alt_disk_install -e /etc/exclude.rootvg -i $SCRIPT_PATH/image.data.altback -BCV hdiskX

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