User`s guide

Chapter 7 Troubleshooting Guide
Troubleshooting Suggestions
LTO-3 Half-Height Tape Drive User’s Guide 78
b When the test finishes, determine the megabytes per second data
transfer rate to verify that the tape drive is performing at an
acceptable rate.
Failed Operations
TapeAlert Messages 7
The LTO-3 Half-Height Tape Drive supports the TapeAlert standard, and
issues the appropriate alert messages in response to operational error
conditions. You can view TapeAlert messages either directly, on the
system screen, or in the log file of your backup application. Note,
however, that some operational error conditions can cause more than one
TapeAlert message.
IF you believe that the read/
write transfer rate is . . . THEN . . .
too slow, use the tape diagnostic
software to perform a trace
buffer retrieval.
Send the diagnostic output
file to Technical Support for
evaluation of the SCSI bus
condition.
acceptable, but backups still
seem to be slow,
it might be attributed to the
number of files and the
average size of the backup
files.
These factors can have a
significant effect on the
backup performance.
Backups where the average
file size is less than 200
Kbytes, for example, are
slower than backups where
the average file size is greater
than 200 Kbytes.
Obtain backup log files to
determine number of files
and average file size.