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SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
5–213
5.45
VERIFY Command (2Fh)
The VERIFY command verifies the data on the medium for the Logical Block
Address range specified.
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (2Fh)
1
Reserved
DPO
Reserved
BytChk
RelAdr
2 - 5
Logical Block Address
6
Reserved
7 - 8
Verification Length
9
Control
Figure 5–105 VERIFY Command Descriptor Block — Data Format
Table 5–99 VERIFY Command — Field Descriptions
Field
Description
DPO
Disable Page Out. When the value of the field = 1, the device server shall
assign the logical blocks accessed by this command the lowest priority for
being fetched into or retained by the cache.
When DPO = 0, the priority shall be determined by fields in the Caching
page.
BytChk
Byte Check. When the value is 1, the drive performs a byte-by-byte
comparison of the data on the medium with the data sent by the initiator
in the data-out buffer transfer.
When 0, the drive performs a medium verification with no data
comparison. In this case, no data is sent by the initiator.
RelAdr
Relative Address. This feature is not supported;
the field
must be 0.
Logical Block Address
The address of the first logical sector to be verified.
Verification Length
The number of contiguous sectors that are to be verified. The drive returns
a CHECK CONDITION status with the correct sense data if the specified
transfer extends beyond out of the logical sector space.
Summary of Contents for Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB
Page 15: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xv...
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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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