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PRODUCT MANUAL 1012581
CHAPTER 8—TROUBLESHOOTING
If you install either an LTO-2 or LTO-3 tape drive in the autoloader, you
must connect the correct terminator to avoid the above issues. The
terminator must be a high-quality active LVD terminator that complies with
the SCSI-3 specification. An appropriate terminator will be stamped with
Ultra 3 or LVD 160, as well as “Active Negation.”
Failure symptoms include:
Read/Write failure
Bus hangs
Connectivity issues—tape drive not seen on bus or drops off bus
Command failures—commands to this device may fail while commands
to other devices on the bus may work properly
BACKUP SOFTWARE REPORTS AN ERROR
Your backup software may report an error as a result of a failure to
communicate with the tape drive or autoloader, a failure by the tape drive to
write or read data, or because of a software configuration issue.
FAILURE TO COMMUNICATE WITH THE TAPE DRIVE
Communication problems on the SCSI bus may be reported by the backup
application as resets, a loss of communication with the tape drive or
autoloader, failure to detect the tape drive, I/O device errors, or parity errors.
These types of errors may occur intermittently.
If you have a SCSI autoloader, check the autoloader’s installation on the
SCSI bus, described in “Connecting the Autoloader to SCSI” on page 15.
If you have an Ethernet connection to your autoloader, check the
autoloader’s Ethernet connection, described in “Connecting the
Autoloader to Ethernet” on page 18.
Use LibTool and LTOTool to capture the diagnostic logs from the autoloader
and the tape drive immediately after an error is reported by your backup
software. See “Advanced Troubleshooting” on page 112 for information.
Technical Support can examine the log to determine the nature of the
reported error.
FAILURE BY THE TAPE DRIVE TO WRITE OR READ DATA
If your backup software reports a media error, one of the following situations
may have occurred:
The tape drive needs cleaning (see “Cleaning the Tape Drive” on page 70).
Always try cleaning the tape drive before you assume the cartridge is bad.
Be sure to use an LTO Cleaning Cartridge.