Suggested Actions; A407: Directory Read - Quantum SuperLoader 3 User Manual

Suggested
Actions 5

A407: Directory Read

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.
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.
SuperLoader User's Guide
Chapter 5 Troubleshooting
A407: Directory Read
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