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6500 Disk Array User’s Guide 21020690 B
Chapter 4 Maintenance, Troubleshooting & Hardware Replacement
Failure Detection and Troubleshoot-ing Guidelines Page 4 - 7
Built-In Self
Test (BIST)
Failures
During power-up, or after you push the RESET button on the display/operation
panel, the array will automatically run a Built-In-Self-Test. This test thoroughly
exercises array hardware and checks the following:
• Controller board components and functionality
• Display/operation panel functionality
• Firmware code checksum
• SCSI termination for single-ended arrays
You can reset the array and run BIST whenever you want to check the array
internals.
Indicators
• The audible alarm will sound, if enabled. After the alarm has begun to
sound, it will go silent after any key is pressed. The alarm cannot be
disabled in BIST mode.
• A BIST error will appear on the display/operation panel. A typical BIST
error looks like this:
Figure 16 Sample BIST Error Message
You have two options when a BIST error occurs:
• Choose to continue with the BIST—The failing test is skipped, and the
rest of BIST is run.
• Choose to loop on the error
—
The failing test is retried infinitely; a
percentage of error will be displayed. Press SELECT to stop the looping.