Compex Systems Advanced SerialRAID Adapters SA33-3285-02 - Manual (Page 323)

v A hardware error that has not been recovered
v A software error that has been detected by the device driver
The target-mode device driver passes error-recovery responsibility for all detected
errors to the caller. For these errors, the target-mode device driver does not know if this
type of error is permanent or temporary. These types of errors are handled as
temporary errors.
Only errors that the target-mode device driver can itself recover through retry operations
can be determined to be either temporary or permanent. The error is ignored if it
succeeds during retry (a recovered error). The return code to the caller indicates
success if a recovered error occurs, or failure if an unrecovered error occurs. The caller
can retry the command or operation, but success is probably low for unrecovered
errors.
TMSSA does no error logging. If an error occurs, that error might be logged by the
adapter device driver.
Chapter 13. Using the Programming Interface 303