Chapter 5 Troubleshooting
A407: Directory Read
SuperLoader User’s Guide 191
Suggested
Actions 5
Following is a list of suggested actions:
• The data in the Cal Fail log word is critical to determine if the drive
failed calibration and why. If the drive does a write from BOT, this
failure is no longer important as the calibration information is
overwritten with new data.
• This event can be used to help understand why a drive may be
getting multiple cleaning lights and if the cleaning lights are all
related to calibration errors. A cleaning light will come on if a drive
gets a Hard Read or Write Error as well.
• To verify if this is all due to the same piece of media, the system/
application logs need to be correlated to when these events occurred.
If it is the same media, replace it or try a write from BOT to see if it
clears.
• Run a Tape Drive Write/Read test with two pieces of media. If test
fails, replace the DCA.
A407: Directory Read 5
The directory referenced in this event log is DLT unique. This directory
contains information the drive uses to allow for fast location of data on
the tape. Without the directory a space command to end-of-data on a full
tape could take as much as 6 hours. The DLT tape drive maintains this
directory to reduces the space to a location on tape time to less than a few
minutes depending on tape speed of the drive. The host or application
software does not have access to this directory information.
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