IBM IC35L036UWDY10 Hard Drive Specifications - Page 152

Physical Sector Format 101b, Defective Sector Number, Head Number of Defect, Defect Descriptors

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8.19.3 Physical Sector Format (101b) Byte 0 1 2 3 4 5 6 7 (MSB) (MSB) Defect Descriptors Cylinder Number of Defect (LSB) Head Number of Defect Defective Sector Number (LSB) Figure 132. Defect Descriptors of Physical Sector Format The Defect List Format field specifies the format of the defect list data returned by the drive. The Defect List Length field specifies the length in bytes of the defect descriptors that follow. The Defect List Length is equal to eight times the number of defect descriptors. Normally the drive will set the Defect List Length field to the amount of space needed to contain the entire defect list. However, the drive is capable of building a defect list with a such length that the entire list cannot be transferred using the maximum allocation length. If the defect list grows beyond 8191 entries, the defect data cannot be transferred with an allocation length of 0FFFFh. The drive will transfer a partial defect list and return CHECK CONDITION status with the sense key set to RECOVERED ERROR and the Additional Sense Code is set to PARTIAL DEFECT LIST TRANSFERRED. The defect list length will be set to 0FFF8h, indicating the maximum number of defect descriptors which can be transferred. Defects beyond this number can not be read by the initiator. Ultrastar 146Z10 hard disk drive specifications 136

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8.19.3 Physical Sector Format (101b)
(MSB)
Defective Sector Number
(LSB)
4
5
6
7
Head Number of Defect
3
(MSB)
Cylinder Number of Defect
(LSB)
0
1
2
Defect Descriptors
Byte
Figure 132. Defect Descriptors of Physical Sector Format
The Defect List Format field specifies the format of the defect list data returned by the drive.
The Defect List Length field specifies the length in bytes of the defect descriptors that follow. The Defect
List Length is equal to eight times the number of defect descriptors.
Normally the drive will set the Defect List Length field to the amount of space needed to contain the entire
defect list. However, the drive is capable of building a defect list with a such length that the entire list
cannot be transferred using the maximum allocation length. If the defect list grows beyond 8191 entries,
the defect data cannot be transferred with an allocation length of 0FFFFh. The drive will transfer a partial
defect list and return CHECK CONDITION status with the sense key set to RECOVERED ERROR and
the Additional Sense Code is set to PARTIAL DEFECT LIST TRANSFERRED. The defect list length will
be set to 0FFF8h, indicating the maximum number of defect descriptors which can be transferred. Defects
beyond this number can not be read by the initiator.
Ultrastar 146Z10 hard disk drive specifications
136