Qualstar XLS Series Installation Manual page 116

8.1 Before You Begin
Note:
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Log. Lib. 1 (SCSI)
Log. Lib. 2 (SCSI)
Figure 8-4 Example 1: LTO3 SCSI cabling diagram (view from the back of the LRM)
Example 2: LTO4 SCSI Connections
Figure 8-4
containing a single LTO4 SCSI tape drive. The logical libraries are controlled as follows:
• Logical Library 1 contains one LTO4 SCSI tape drive. The software application in
the host computer communicates with the tape drive and the medium changer
over two seperate SCSI buses. The LTO4 SCSI tape drive carrier is self
terinating and the other end is terminated by the host computer. The upper port
of HBA A in the system controller (which provides active termination) and the
other end is terminated by the host computer.
• Logical Library 2 also contains one LTO4 SCSI tape drive in a drive bay shared
with Logical Library 1. The software application communicates with the tape
drive and the medium changer over two seperate SCSI buses. The LTO4 SCSI
tape drive carrier is self terinating and the other end is terminated by the host
computer. The lower port of HBA A in the system controller (which provides
active termination) and the other end is terminated by the host computer.
8-4
In the example, the empty slots in the drive bay contain drive filler
assemblies. They could also contain SCSI or Fibre Channel tape drives
connected to other logical libraries.
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shows the cabling scheme for two logical libraries, with each logical library
to SCSI host (Log. Library 2)
to SCSI host (Log. Library 1)
A B C D
501601 Rev. 07-01-19