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When 3590 subsystems are attached to the 3494, the following 3590 functions
change:
Drive control
The loading and unloading of volumes is controlled by the library manager.
The 3590 subsystem communicates with the library manager to update the
database with the drive status and cartridge location information.
Message displays
The library manager controls which messages are displayed to prevent the
messages from getting out of synchronization with the library manager
during Manual mode operations.
Attention interrupt
The library manager can use the communication path to the 3590 Model
A00 subsystem to send information to the host.
For more information on 3590 controls and indicators, see
IBM 3590 High
Performance Tape Subsystem User’s Guide
, GA32-0330.
3494 Model B18 Operator Panel
The 3494 Model B18 Virtual Tape Server operator panel is mounted on the rear
door of the unit frame.
Power Controls
Figure 28 on page 39 shows the location of the power control on the Model B18
VTS.
1 Unit Emergency switch
The Unit Emergency switch turns off power to the 3494 Model B18
A06O0001
Figure 27. 3590 Model B1A Operator Panel
38 Magstar 3494 Tape Library Operator Guide