Operating The Lto Library; Operator Control Panel (Ocp); Operating Modes; Ocp Philosophy - Fujitsu ETERNUS LT20 S2 Installing, Starting Up And Maintaining

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Operating the LTO Library

4.1

Operator Control Panel (OCP)

4.1.1

Operating Modes

There are two basic modes for Operator Control Panel (OCP). First is the User
Interaction mode. This mode is employed when a user is pushing buttons on the
OCP. The second mode is the System Driven Mode. This is the normal mode of
operation. In this mode, the OCP displays status associated with the library
actions that were caused from commands issued via the library's other inter-
faces. Actions like Loading, Rewinding or Moving tape will be displayed. When
an OCP button is pressed and released, the OCP automatically transitions to
User Interaction Mode. User Interaction Mode will continue for 3 minutes after a
user stops pushing buttons, or the requested robot action stops – whichever is
longer. At this time the OCP will return to System Driven Mode.
In case of activated User security feature the User Interaction Mode is restricted
to the Information and Login menu item, until a login with correct PIN is entered.
4.1.2

OCP Philosophy

During the following discussion of the OCP operation, several functional
nuances may be clarified by defining several rules the OCP must abide by.
These rules of operation constitute a "philosophy".
● Any operational conflict between commands received over RMU and those
entered via the front panel will be avoided with a reservation mechanism on
a "first-come, first-served" basis. Any reservation by the OCP is canceled by
an OCP logout or the timeout, which cancels the User Interaction Mode.
Library firmware will not allow a user to select an impossible request. Those
●
situations will include, but are not limited to:
– Moving a cartridge from any source to a full slot
– Unloading a cartridge from an empty slot
– Moving a cartridge from any source to a full drive
– Unloading a cartridge from an empty drive
ETERNUS LT20 S2
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