First, let's try to understand the difference between Migration Installation and Preservation Installation, following are conetnt Icopied from IBM Redbooks.
Preservation Installation:
A Preservation Installation will only save all the non-system logical volumes and file systems on rootvg (for example, /home), or any user-created logical volumes. Preservation Installation overwrites the /usr, /tmp, /var, and /(root) file systems by default, so any user data in these directories is lost.
Migration Installation
Migration Installation preserves all logical volumes and file systems on rootvg except /tmp.
Second, let's try to understand the question
By default , which of the following installation methods will retain existing user data in the root vg (excluding user data in /usr,/tmp/var,and /(root)file system)?
A. Migration installation
B. preservation installation
C . user data is not retained by defaule
D. Both Migration installation and Preservation installation
Since Migration installation will will retain existing user data in the root vg (INCLUDING user data in /usr,/tmp/var,and /(root)file system), both A and D are wrong. So that B is the only correct answer. |
