Need to restore different versions of files (for example, file
systems used for word processing)
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This schedule
saves all files modified that day, as well as those files still on disk that were
modified since the last backup of a lower level. However, with this schedule you should
use a different tape each day because a file changed on Tuesday, and again on Thursday,
goes onto Friday's lower-level backup looking like it did Thursday night--not
Tuesday night. If a user needs the Tuesday version, you cannot restore it unless you
have a Tuesday backup tape (or a Wednesday backup tape). Similarly, a file that is
present on Tuesday and Wednesday, but removed on Thursday, does not appear on the
Friday lower-level backup.
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Are backing
up a number of file systems on the same server
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Consider offsetting the schedule for different file systems.
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This way you're not doing all level 0 backups on the
same day.
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