Sun StorEdge™ L25 Tape Library and Sun StorEdge™ L100 Tape Library Installation Guide
Document 6423015-01, Ver. 1, Rel. 0
June 2002
34
Connecting the Library to the Host Computer
Connecting the Library to the Host Computer
0
The library robotics and tape drives are independent SCSI devices with
independent SCSI connections. The L25 and L100 provide two 68-pin
high density connectors for each device. You can connect these devices
to a single SCSI bus or divide them between two or more SCSI buses.
To connect the library or libraries to the host computer(s), refer to the
following sections:
•
•
•
SCSI Cabling
Guidelines
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Refer to these SCSI cabling guidelines when completing the SCSI
cabling:
• Each device on the SCSI bus must have a unique SCSI ID. The
default settings for the L25 are: library robotics = 0, tape drive 1 = 1,
tape drive 2 =2. The default settings for the L100 are: library
robotics = 0, tape drive 1 = 1, tape drive 2 = 2, tape drive 3 = 3, tape
drive 4 = 4, tape drive 5 = 15, tape drive 6 = 14. You can change
these SCSI ID settings using the
Drive ID
and
Library ID
options on
the GUI
Configuration
screen.
• Termination must be provided at each end of the SCSI bus (see
).
• All SCSI cables must be shielded or double shielded to meet EMI
specifications.
• The maximum total SCSI bus length for an HVD SCSI bus is 82 feet
(25 meters).
Terminator Power
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External terminators must be installed at the end of each SCSI bus.
Power for the terminator must be supplied by at least one device on
the SCSI bus.
In the factory default configuration, the library robotics supplies
terminator power. You can turn this terminator power off using the
Terminator Power
option on the GUI
Configuration
screen.