Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
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20.15.4.15
Microcode Error
The microcode from the interface is validated before the device operates using that microcode. When the validation
detects incorrect or incomplete data, the Drive enters degraded mode.
If the initiator attempted to load microcode using the Write Buffer (3B) retry the Write Buffer (3B). If the command
completes with
- Good Status - return to normal processing
- Check Condition Status - service the drive using the service guidelines recommended in Section 20.15.1 "Drive
Service Strategy".
If the check sum error occurred during normal processing, the initiator may attempt to load microcode before
deciding to service the drive using the service guidelines recommended in Section 20.15.1 "Drive Service Strategy".
To load new microcode, the initiator should issue a Write Buffer (3B) command with the download and save option. If
the Write Buffer (3B) command completes with
- Good Status, return to normal processing. Retry the failing command. If the task complete with
- Good Status - Continue normal processing.
- Check Condition Status for check sum error - Service the drive using the service guidelines recommended in
Section 20.15.1 "Drive Service Strategy".
- Check Condition Status for any other error - follow the recommended recovery procedure for the error
reported.
- Check Condition Status for Check sum error, service the drive using the service guidelines recommended in
Section 20.15.1 "Drive Service Strategy".
- Check Condition Status for any other error, follow the recommendations for the returned sense data.
20.15.4.16
Predictive Failure Analysis
The Drive performs error log analysis and will alert the initiator of a potential failure. The initiator should determine if
this device is the only device with error activity.
If this drive is the only drive attached to the initiator with error activity, service the drive using the procedures
specified in Section 20.15.1 "Drive Service Strategy".
Note: Service for this drive can be deferred. The longer service is deferred, the more probable a failure can occur that will
require immediate service.
If more than this drive is experiencing error activity, the drive is probably not at fault. Locate and service the outside source
causing error activity on this drive.