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SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
5–143
5.24
READ DEFECT DATA Command (10) (37h)
The READ DEFECT DATA (10) command directs the drive to report defect
information about the drive’s medium. Refer to the FORMAT UNIT command for
information about defects. The data sent to the host in the command’s data-in buffer
transfer consists of a four-byte Defect List header (Figure 5-64), followed by any
Defect Descriptors (Figures 5-62 and 5-64).
The READ DEFECT DATA (10) Command Descriptor Block is shown in Figure 5-
66; the data fields are described in Table 5-67.
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (37h)
1
Reserved
2
Reserved
Plist
Glist
Defect List Format
3 - 6
Reserved
7 - 8
(MSB)
Allocation Length
(LSB)
9
Control
Figure 5–61 READ DEFECT DATA (10) Command — Data Format
Table 5–67 READ DEFECT DATA (10) Command — Field Description
Field
Description
PList
When the value is 0, the returned data does not include the Primary Defect
List.
When the value is 1, the returned data includes the Primary Defect List. The
defects are returned in ascending order.
GList
When the value is 0, the returned data does not include the Grown Defect
List.
When the value is 1, the returned data includes the Grown Defect List. The
defects are returned in order of occurance.
When both PList and GList are set to 1, the Primary Defect List and the
Grown Defect List are returned. The Plist is returned followed by the Glist
(the lists are not merged). When both are set to 0, only the Defect List
Header (Figure 5-64) is reported to the initiator.
(
continued
)
Summary of Contents for Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB
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Page 19: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xix...
Page 25: ...About This Manual 1 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 55: ...Installation 3 28 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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Page 315: ...Feature Descriptions 6 14 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 321: ...Appendix A Quick Reference A 6 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 363: ...Appendix B SCSI Bus Signal Timing B 42 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 369: ...Index I 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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