Quantum 10K II - Manual (Page 215)

SCSI Description
5–148 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
READ DEFECT DATA Command (12) (B7h) (continued)
Table 5–69 READ DEFECT DATA (12) Command — Field Descriptions (continued)
Field Description
Defect List Format This field specifies the format in which the defect descriptors are to be
returned. The supported formats are:
000b
Block Format (Figure 5-66). 1
100b Bytes from the Index (Figure 5-67). The data returned from
this mode does not include defects outside normal user
space.
101b Physical Sector Format (Figure 5-67). Default format. The
defects returned from this mode do not include defects
outside normal user space.
110b Vendor-Unique Format. This format is valid only for the READ
DEFECT DATA commands. The data returned from this mode
does not include defects outside normal user space. Note
that the vendor-unique format is proprietary in nature and
thus is not documented in this Product Manual.
1 All in-line spared blocks do not have an associated LBA, and, therefore, will not be seen in Logical
Block Format.
Figure 5–66 shows the Block Format returned when the Defect List Format is 000b.
Bit
Byte
7 6 5 4 3 2 1 0
0 - 3 Defective Block Address
Figure 5–66 Defect Descriptor — Block Format
Figure 5-67 shows the Defective Bytes From Index Format when the Defect List
Format is 100b or the Physical Sector Format when the Defect List Format is 101b.
Bit
Byte
7 6 5 4 3 2 1 0
0 - 2 Cylinder Number of Defect
3 Head Number of Defect
4 - 7 Defective Bytes From Index / Defective Sector Number
Figure 5–67 Defect Descriptor — Bytes From Index Format, or
Physical Sector Format