There the following aspects to consider while configuring Amanda
You may fill a field or left it using the internal Amanda default value.
A field will use internal defaults when:
Left blank
Selected as 'undefined' or 'use default'.
Integer arguments may have one of the following (case insensitive) suffixes, some of which have a multiplier effect:
Some number of bytes.
Some number of gigabytes (bytes*1024*1024*1024).
Some number of kilobytes (bytes*1024).
Some number of kilobytes per second (bytes*1024).
Some number of megabytes (bytes*1024*1024).
Some number of megabytes per second (bytes*1024*1024).
Some number of tapes.
Some number of days.
Some number of weeks (days*7).