Exabyte 221L, Product Manual

Page: 70 / 208

54
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RODUCT
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ANUAL
1014258
C
HAPTER
4—O
PERATING THE
L
IBRARY
C
HANGING THE
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OBOT
C
ONTROL
M
ODE
The robot control mode determines the source of commands issued to the
robot to move cartridges. You can set the library to one of the following control
modes: SCSI, Sequent1, Sequent2, Remote, LCD, or Console. These control
modes allow you to operate the library with application software (SCSI),
operate the library as a stacker device (Sequent1 and Sequent2), control robot
motion from the Remote Management utility (Remote), control robot motion
from the operator panel (LCD), or perform diagnostic functions (Console).
Note: Control mode settings remain through power cycles.
The robot control modes are described in Table 4-1 .
Table 4-1 Robot control modes
Control Mode Description
SCSI This is the standard operating mode and the default setting for the library. When
the library is operating in SCSI mode, the motion of the robot is controlled by
application software running on the host computer.
Note: An application can issue commands to the library regardless of the
control mode. However, the library must be in SCSI mode for the
application to control robot motion.
Sequent1
and
Sequent2
In the sequential modes, no library application is required to control robot motion.
The library’s internal firmware instructs the robot to pick all cartridges sequentially,
from the first cartridge in the magazines through the last cartridge in the fixed slots
(or the last data cartridge slot specified by the Max Addressable Slot option, as
described on page 48 ). In Sequent1 mode, the cartridges are processed in Drive
1 only. In Sequent2 mode, the cartridges are processed in Drive 2 only.
Remote When the library is operating in Remote mode, you control the motion of the
robot by issuing commands from the library’s Remote Management utility (see
Chapter 6 ).
Note: You can monitor library operation through the Remote Management
utility without setting the library to Remote mode. You only need to use
Remote mode when you want to control robot motion from the Remote
Management utility.
LCD When the library is operating in LCD mode, you control the motion of the robot
by issuing commands through the library’s operator panel. You can use this mode
to move cartridges and perform hardware exercises and demos.
Note: You can use most operator panel functions without setting the library to
LCD mode. You only need to use LCD mode when you want to control
robot motion from the operator panel.
Console When the library is operating in Console mode, robot motion is controlled from a
terminal connected to the library’s serial port.
Note: You do not need to switch to Console mode if you want to create
diagnostic listings for technical support or upgrade firmware. For
information about these tasks, see page 143 .