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2-3
March 31, 1999
2.4.1 Drives
The AML/J system supports a large number of drives for different stor-
age media.
2.4.2 Control cabinet
The control unit of the system is housed in a control cabinet. This control
cabinet contains:
• AMU PC
• Control unit
− Power supply
− Motor control
− Interface converter
− Safety system
• Drive(s) (optional)
Figure 2-2: Control cabinet
2.4.3 AML Management Unit (AMU)
The AMU is the control processor for the AML system. In the normal
mode the host computer sends the commands to the AMU for controlling
the system. The AMU is located next to further power supply compo-
nents in the control cabinet Figure 2-2: on page 2-3.
It is possible to connect a second AMU PC in parallel to back up against
failures due to failures of the PC hardware. This redundant version is
called Dual-AMU, and a few cables have to be reconnected for the
change.
AMU monitor
Control unit
AMU PC
Keyboard