IBM Magstar MP 3570 C Series Maintenance Information Download

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Front Panel Indicators and Controls

Figure 53 shows the front assembly for Model C.

Operator Panel Display

See “Operator Panel Overview” on page PANEL-3 for a description of the operator panel.

Priority Cell

Models C01, C02, C11, C12, C21 and C22 have a priority cell that can be used to load or unload
cartridges from the subsystem without removing the cartridge magazine. Because cartridges can be
inserted without opening the door, the integrity of the tape inventory is not violated. To use this
feature, magazine 1 must be present and the rightmost cartridge cell must be unused.

Its functions are as follows:

When in automatic or manual mode, requests to mount an external cartridge can be satisfied by

placing the specified cartridge into the priority cell in the import position and pressing START. The
cartridge in the priority cell will be the next one loaded into the drive. When the drive has
unloaded the cartridge, it will be returned to the priority cell in the export position.

When in random mode, the priority cell acts as an import/export station for the automated library.

Because cartridges can be inserted into the priority cell without opening the door, additions or
removals can be made to the cartridge inventory under control of the host (initiator) without
opening the door and violating the integrity of the inventory.

Note: When using the priority cell, the cartridge must be placed in the import position.

Magazine 1 Location

Magazine 2 Location

Door

The door protects the integrity of the inventory in the library units. As long as the door remains
closed, the host knows that the magazine inventory remains unchanged. If the door is opened, the
host (initiator) is alerted that the inventory may have changed. The door also acts as a safety
interlock. When the door is opened, the transport mechanism will complete any movement in progress
and stop. The transport mechanism will not move until the door is closed. The library will restart
when the door is closed without any further intervention by the operator.

Note: Be careful, when opening the library door, to not move cartridges from the export position back

to the import position.

Security Key Lock

The security key lock locks the door closed. The Security Key lock on the library helps maintain
security for cartridges in the library unit. It is a physical lock only, and is not sensed or controlled by
the initiator or device. When locked, the only way to add or remove cartridges to or from the library
units is through the priority cell.

Magazine 2 In Use Indicator

The yellow LED indicates the status of Magazine 2. When it is ON, the operator should not add or
remove cartridges to or from that magazine and should not remove that magazine from the library unit.
The Magazine In Use LED is ON when a cartridge from the magazine has been transported to the
drive for processing, or when the library unit is in random mode and the initiator has issued the
Prevent/Allow Medium Removal command with the prevent bit set.

IBM Magstar MP 3570 C Series, Maintenance Information

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