Spectra Logic Spectra 12000 - Manual (Page 28)

28 Spectra 12000 User Guide
Voltage Differential SCSI (L-QIPs), Ethernet (E-QIPs), or any combination
of the above.
To check the status of the F-QIPs on the back of the QIP. In the upper
right-hand corner of the F-QIP you can see two lights, labelled Fibre and
QIP, corresponding to the Fibre processor and QIP processor. Both lights
should be lit up green, indicating the processor’s status as good.
Library Control Module The Library Control Module (LCM) is a multipurpose
controller module with six primary functions. The six functions are to:
Š Control the Entry/Exit Port.
Š Issue diagnostics commands via the diagnostics menu.
Š Control the front door locking solenoids.
Š Run the Library Controller interface program and provide outputs to
the main display/touch screen.
Š Issue move commands.
Š Interface with QIPs for the programming of logical libraries, drive
configurations and controller configurations.
The LCM connects to the QIPs and robotics via the Controller Area
Network (CAN) bus. CAN is a super-robust, low-noise bus technology.
Spectra Logic’s CAN bus eliminates a QIP as a single point of failure. If a
single QIP fails, other QIPs can be configured to take over.