User Manual

SCSI Commands Reference Manual, Rev. J 363
www.seagate.com Parameters for direct access devices
ACCUMULATED POWER ON HOURS field
The ACCUMULATED POWER ON HOURS field contains the total hours for the device server has been powered on since manufacturing at the
time the self-test is completed. If the test is still in progress, the content of the ACCUMULATED POWER ON HOURS field shall be zero. If the
power-on hours for the device server at the time the self-test was completed is greater than FFFFh then the content of the ACCUMULATED
POWER ON HOURS field shall be FFFFh.
ADDRESS OF FIRST FAILURE field
The ADDRESS OF FIRST FAILURE field contains information that locates the failure on the media. If the logical unit implements logical blocks,
the content of the ADDRESS OF FIRST FAILURE field is the first logical block address where a self-test error occurred. This implies nothing about
the quality of any other logical block on the logical unit, since the testing during which the error occurred may not have been performed in a
sequential manner. This value shall not change (e.g., as the result of block reassignment). The content of the ADDRESS OF FIRST FAILURE field
shall be FFFF FFFF FFFF FFFFh if no errors occurred during the self-test or if the error that occurred is not related to an identifiable media
address.
SENSE KEY, ADDITIONAL SENSE CODE, and ADDITIONAL SENSE CODE QUALIFIER fields
The SENSE KEY field, ADDITIONAL SENSE CODE field, and ADDITIONAL SENSE CODE QUALIFIER field may contain a hierarchy of additional infor-
mation relating to error or exception conditions that occurred during the self-test represented in the same format used by the sense data (see
3.37).