User's Guide

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In Sequential 1 mode, the library processes the cartridges in tape drive
1 (closest to the magazine).
In Sequential 1 mode, the library performs the following steps:

Picks the cartridge from slot 1 and places it in the tape drive specified
by the mode (1 or 2). If the slot is empty, the CHM picks the next
cartridge in the magazine.

Waits until the tape drive ejects the cartridge, then returns the
cartridge to its original slot.

Repeats these steps for the next cartridge until it has processed all
of the cartridges.