IBM
000-221 · Question #55
000-221 Question #55: Real Exam Question with Answer & Explanation
The correct answer is A. Migration. When upgrading AIX from version 6 to version 7, the Migration installation method is the only option that upgrades the OS while retaining existing application software and user data.
Question
A system is being taken from AIX 6 to AIX 7. Systems application and user data must be preserved. Which upgrade method will support this requirement?
Options
- AMigration
- BPreservation
- CNew and Complete Overwrite
- DNIM customization with a mksysb
Explanation
When upgrading AIX from version 6 to version 7, the Migration installation method is the only option that upgrades the OS while retaining existing application software and user data.
Common mistakes.
- B. Preservation installation is not a standard AIX installation type - the recognized types are New and Complete Overwrite, Migration, and Preservation (of user volume groups), and even the preservation variant still replaces the rootvg content rather than upgrading the OS version.
- C. New and Complete Overwrite destroys all existing data and configuration on the target disk and installs a fresh copy of the OS, making it unsuitable when application and user data must be retained.
- D. A mksysb via NIM restores a previously captured system image to the same or equivalent system but does not perform a version upgrade from AIX 6 to AIX 7; it would restore the old AIX 6 image, not upgrade it.
Concept tested. AIX OS upgrade using Migration installation method
Reference. https://www.ibm.com/docs/en/aix/7.2?topic=installation-migration
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