000-221 · Question #2
An administrator plans to duplicate the active rootvg on a given system to a spare disk that will be migrated to newer hardware. Which flag on 'alt_disk_copy' must be used to reset user-defined…
The correct answer is C. O. The -O flag on alt_disk_copy removes customized device entries from the ODM on the alternate disk, allowing device configurations to be rebuilt from defaults when the disk boots on new hardware.
Question
An administrator plans to duplicate the active rootvg on a given system to a spare disk that will be migrated to newer hardware. Which flag on 'alt_disk_copy' must be used to reset user-defined device configurations to defaults?
Options
- AX
- BR
- CO
- DD
How the community answered
(34 responses)- A6% (2)
- B3% (1)
- C76% (26)
- D15% (5)
Why each option
The -O flag on alt_disk_copy removes customized device entries from the ODM on the alternate disk, allowing device configurations to be rebuilt from defaults when the disk boots on new hardware.
The -X flag is not a standard alt_disk_copy flag related to device configuration resets.
The -R flag is not a recognized alt_disk_copy option for resetting device definitions.
The -O flag instructs alt_disk_copy to run the bosconfig command against the alternate disk's ODM, which strips user-defined and hardware-specific device customizations and resets them to defaults. This is essential when migrating to different hardware because the new system's device discovery will otherwise conflict with the old system's device attribute history. Without -O, the booted alternate disk may fail to configure devices correctly on dissimilar hardware.
The -D flag suppresses running cfgmgr after the next reboot but does not reset device configurations to defaults.
Concept tested: alt_disk_copy ODM device configuration reset for hardware migration
Source: https://www.ibm.com/docs/en/aix/7.3?topic=a-alt-disk-copy-command
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