IBM DDRS-39130 - Ultrastar 9.1 GB Hard Drive Specifications page 93

Byte 7 6
44 - 45 Parameter Code = 05h
46 D U DS
= 0 = 0
47 Parameter Length = 04h
48 - 51 Total bytes read
52 - 53 Parameter Code = 06h
54 D U DS
= 0 = 0
55 Parameter Length = 04h
56 - 59 Count of LBA's with hard error
The drive will attempt to read data after a seek before the head has fully settled on track. This is done to aid
performance. However as a result there is a high incidence of error recovery invoked which normally uses
ECC or a retry to recover the data. As a consequence of this an error recovered by a single retry is not
reported by the error counters.
Additionally the drive does not report data recovered by ECC on the fly as it is not possible to distinguish
between ECC errors caused by reading before settling and other causes.
5 4 3 2
TSD ETC T M C = 0
= 0 = 0
TSD ETC T M C = 0
= 0 = 0
1 0
LBIN LP
= 0 = 0
LBIN LP
= 0 = 0
SCSI C O M M A N D SET
83