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 hous ed in a control cabi net. 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 c omm ands to the A MU for c ontr o llin g
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 AM U PC in parallel to back up again st
failures due to fa ilures of the PC h ardware. This redund ant version is
called Dual-AMU, and a few cables have to be reconnected for the
change.
AMU monitor
Control unit
AMU PC
Keyboard