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Chapter 4 Cabling the Multiple Library Stack
Power Cabling
SCSI Cabling
4
Guidelines
Terminator
4
Power
Power Cabling
72
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 an ATL M1500 library are: library robotics = 0, tape
drive 1 = 1, tape drive 2 = 2. The default settings for an ATL M2500
library 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.
•
Terminator must be provided at each end of the SCSI bus (see
Terminator
Power).
•
Do not mix low voltage differential (LVD) and high voltage
differential (HVD) SCSI devices on the same bus. Ensure that the host
adapters match the devices on the bus.
•
All SCSI cables must be shielded or double shielded to meet EMI
specifications.
•
The maximum total SCSI bus length for an LVD SCSI bus is 40 feet
(12 meters).
•
The maximum total SCSI bus length for an HVD SCSI bus is 82 feet
(25 meters).
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
option on the GUI
Terminator Power
The library power cabling differs depending on whether the library
module is an ATL M1500 or ATL M2500:
•
To connect an ATL M1500 library to AC power, see
ATL M1500 Library to AC
•
To connect an ATL M2500 library to AC power, see
ATL M1500 Library to AC
ATL StackLink™ Installation Instructions
screen.
Configuration
Power.
Power.
4
Connecting an
Connecting an
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