Quantum AML/E Betriebsanweisung PDF herunterladen (Seite 18)

2-4 System Description

600139-C

System Operational Flow

Major system operational components include the following:

• Host

•AMU

• Controller

The basic operational philosophy of the AML/E is that the

host system is always the master. During normal processing,

all commands originate from the host system.

When the host software determines that a media library

action is necessary, it creates the appropriate command string

and sends it to the AMU for processing. The AMU receives

and interprets the host command then issues appropriate

commands to the Controller hardware.

The Controller hardware provides the movement signals for

the Handling Unit and Storage Segments. After completing

the actions, the Controller hardware returns status to the

AMU. When all Controller status is returned, the AMU

reports an overall result to the host system.

Hardware Components

The main hardware components of the AML/E library are

the:

•AMU

• Handling Unit

• Storage Segments

• Control Cabinet

• Insert/Eject (I/E) Unit

• Modem

AMU

The AMU is the central interface of the AML/E library. The

AMU maintains a copy of the library drives and media

information in a relational database. During normal

operations, the host computer directs the AML/E library. The

AMU hardware and software components operate

transparently.

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Quantum AML/E Betriebsanweisung Seite 18