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[新手入门] The question from AIX 183 redbook (SG24-6183, page 153 )? [复制链接]

aixvg

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发表于 2003-02-25 14:18 |只看该作者 |倒序浏览

A system administrator must perform disaster recovery onto a smaller system. The original rootvg drive was 4.5GB and is being replaced with a 1.0GB drive. Which of the following procedures should be performed before performing the backup to make sure that the mksysb restores on the 1.0GB disk?
A. Edit the image.data file and set FS_COMPRRESS=yes for each file system.
B. Edit the image.data file and set UPPER_BOUND=4 for each logical volume.
C. Edit the image.data file and change the PP_SIZE for each logical volume to 4 MB.
D. Edit the image.data file and divide the logical partition number for each logical volume by 2.

The answer in the book is C.
Could someone help me Why the C is correct answer?

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kkkggg21cn

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发表于 2003-02-25 20:36 |只看该作者

The question from AIX 183 redbook (SG24-6183, page 153 )?

容量由大变小，势必会造成容量不够的可能，因此在恢复时要提高原有VG里所有文件系统的磁盘空间利用率，可以通过更改pp size来做到这一点。
选C的可能原因就在于此吧.

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