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Parameter Data Formats
4 - 40 C141-E167
• Data Underrun
Count of data underruns which occur during write operation when a buffer empty condition
prevents continued transfer of data to the media from the buffer.
The drive does not support this field due to a hardware limitation. Zero is always reported.
• Data Overrun
Count of data overruns which occur during read operation when a buffer full condition prevents
continued transfer of data from the media to the buffer.
The drive does not support this field due to a hardware limitation. Zero is always reported.
4.2.3 Write error count page (X'02')
Bit
Byte
76543210
0 00000010
1 X‘00’ (Reserved)
2 Page Length (MSB)
3 Page Length (LSB)
All of the following parameters have this header.
Page Length will be defined based on the value of Parameter Pointer. (CDB 5-6)
4.2.3.1 Write errors recovered without delays (Page 02, Code 0000)
Bit
Byte
76543210
4
5
(MSB)
X'0000' (Parameter code)
(Errors Recovered Without Delays) (LSB)
DU DS TSD ETC TMC LBIN LP6
00000000
7 X'04' (Parameter Length)
8(MSB)
9
10
Counter Value
11 (LSB)
The Counter Value indicates the count of all recovered write errors that would not be reported to the
initiator during write operations, because no delay is incurred.
The drive does not support this field due to a hardware limitation. Zero is always reported.