Nevermind... I found my answer...
>4. SLOT NUMBERS AND THE "CURRENT" SLOT > >Some tape changers, such as carousels and gravity stackers, have a hardware >notion of current position. Others have no current position when no tape >is loaded: all tapes are in their slots and the changer arm is docked away >from the slots. > >Nevertheless, Amanda requires its tape-changer scripts to maintain the >notion of a "current" position. This is for performance reasons: as >tapes tend to be loaded into the rack in order, and Amanda uses them >in order, the next tape to use can be found much quicker if the >position of the previous one is remembered. As an example, the >chg-multi.sh script maintains the current position in a >"chg-multi.state" file (or any other file specified in a `statefile' >line in the changer configuration file).
