Qualstar XLS Series Installation Manual page 118

8.1 Before You Begin
Example 3: Fibre Channel Connections
Figure 8-6
contains twelve tape drives and two Fibre Channel HBAs. The XLS has been partitioned
into three logical libraries, as follows:
• Logical Library 1 contains five tape drives installed in two drive bays. The host
software controls the medium changer using the upper port of HBA A.
• Logical Library 2 contains three tape drives in a drive bay shared with Logical
Library 1. The host software controls the medium changer using the lower port of
HBA A.
• Logical Library 3 contains four tape drives in a single drive bay. The host
software controls the medium changer using the upper port of HBA B.
The tape drives are connected to a Fibre Channel switch installed in the equipment rack.
The three ports on the HBAs are also connected to this switch. The software application
communicates with the medium changer and tape drives across a switched fabric.
Log. Lib. 1 (FC)
Log. Lib. 2 (FC)
Log. Lib. 3 (FC)
Figure 8-6 Example 2: Fibre Channel cabling diagram (view from the back of the LRM)
8-6
shows the cabling scheme for an example Fibre Channel (FC) library that
to FC switch (Log. Library 3)
to FC switch (Log. Library 1)
to FC switch (Log. Library 2)
to FC switch (Log. Library 1)
to FC switch (Log. Library 1)
to FC switch (Log. Library 3)
A B C D
to FC switch (Log. Library 2)
501601 Rev. 07-01-19