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2-2 Overview
DOC D00 025-A
2.3 Description of function
The AML/J system can be installed on the unfinished floor or on a false
floor.
The handling unit moves the cartridges between the storage cells, drives
and the I/O unit. The handling unit has a gripper. A barcode scanner on
the gripper identifies the cartridges at the compartments in the archive.
Further details are described under Handling unit on page 2-6. The car-
tridges can be brought into the AML/J system or moved out from the
system with the aid of the I/O unit without interrupting the work.
Additional details are described under I/O unit on page 2-7.
Manual access to the compartments in the archive, the handling unit and
the drives is through an access door after switching off the power supply.
The cartridges in the AML/J are moved by host requests. Primary
requests are for mounting and discharging cartridges in the drives and
for inserting/ejecting cartridges into/out from the AML/J.
Each cartridge can have an external machine and user readable label to
identify the cartridge in the AML/J at stocktaking and when adding a
cartridge to the AML/J. The AMU stores the physical storage location of
the cartridge in a database which is based on the Volser (Volume Serial
Number).
Apart from the commands for moving the tape cartridges, the host can
also request status, configuration and cartridge storage information from
the AML/J control unit.
2.4 Functional units
The AML/J system consists of the following functional units:
• Drives
• Control cabinet with:
• AML/J control unit
• AMU (AML Management Unit)
• Storage cells (linear racks)
• Handling unit
• I/O units