NEO S-Series User Guide
10400666-001
© 2014 Overland Storage, Inc.
Page 8
3 Troubleshooting
This chapter provides information for verifying correct installation and troubleshooting the library.
Installation problems
3.1
Problems encountered during the installation of the library are usually caused by improper SCSI bus configuration,
application software configuration errors, or an incorrectly configured operating system.
If the used application software is not communicating with the library after installation, check the following
:
SCSI ID
3.1.1
The library uses a single SCSI ID. Depending on other devices attached to the same SCSI bus and their SCSI IDs,
change the SCSI ID of the library or tape drive before use the library.
Review the manuals for the other devices on the SCSI bus or the operating system to determine which SCSI IDs are
currently in use.
SCSI host adapter installation
3.1.2
1.
Verify that the SCSI host adapter is installed correctly.
Refer to the manual that came with the SCSI host adapter for installation and troubleshooting instructions.
2.
Pay particular attention to any steps describing the settings of various jumpers and/or switches on the host adapter,
if applicable.
3.
Make sure that the host adapter is properly seated in the motherboard slot and the operating system correctly detects
the host adapter.
4.
Make sure that the proper device driver is installed for the SCSI host adapter.
LUN scanning
3.1.3
Use dual LUNs to control the tape drive (LUN 0) and library robotic (LUN 1). These models require an HBA that
supports LUN scanning and LUN scanning must be enabled.
SCSI cabling
3.1.4
1.
Verify that all SCSI cables are securely connected at both ends.
2.
Check the length and integrity of the SCSI cabling.
3.
Check the SCSI connector for bent pins.
The length of the internal SCSI cabling inside the library is 2 feet (60 cm). This length must be included in any
calculations of cable length.
•
For LVD SCSI the maximum length for a single device is 82 feet (25 meters).
•
For multiple devices, the maximum combined internal/external length is 40 feet (12 meters).
•
If you have a combination of LVD and SE devices on the bus, the maximum cable length reverts to the SE
specification, which for ultra devices is 10 feet (3 meters) for four or fewer devices, and 5 feet (1.5 meters) for
more than four devices.
Termination
3.1.5
If the library is the only SCSI device — other than the SCSI host adapter — on the selected SCSI bus, it must be
terminated. Likewise, if the library is physically the last SCSI device on the SCSI bus, it must be terminated.
Only the devices physically located at the beginning and end of the SCSI bus should be terminated.
Refer to the manuals supplied with other devices on the SCSI bus for information on enabling or disabling termination
on those devices.
