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SCSI Commands
Quantum DLT 4000 Tape Drive
5-137
REQUEST SENSE Command (03h) (continued)
Table 5–66 REQUEST SENSE Data - Field Descriptions
Field Name
Description
Valid
When set to 1, this field indicates that the information bytes contain valid
information as defined in the ANSI SCSI-2 specification.
Error Code
A value of 70h indicates a current error – the report is associated with the most
recently received command.
A value of 71h indicates a deferred error – the report is associated with a
previous command and not as a result of the current command.
No other values are returned in this field.
Segment
Number
This value of this byte is always 0.
Filemark
This bit indicates that the current command has read a Filemark.
EOM
End of Medium. This bit indicates that an End of Medium condition (End of
Partition or Beginning of Partition) exists. The warning is also given by setting
the Sense Key to NO SENSE and the Additional Sense Qualifier to End of Partition
or Beginning of Partition.
ILI
Incorrect Length Indicator. This bit indicates that the requested logical block
length did not match the logical block length of the data on the tape medium.
Only READ or VERIFY may cause this bit to be set.
Sense Key
In most cases, Additional Sense Code and/or Qualifier information is available.
The codes and qualifiers are covered in detail in Table 5-67.
Information
Bytes
These bytes contain the differences (residue) of the requested length minus the
actual length in bytes, blocks, or Filemarks, as determined by the command.
Negative values are indicated by two’s complement notation. The bytes are valid
for all READ, WRITE, SPACE, and VERIFY tape commands for which a CHECK
CONDITION status has been generated. The information bytes are 0 for MODE
SELECT / SENSE, INQUIRY, READ BLOCK LIMITS, and TEST UNIT READY.
Additional Sense
Length
This field specifies the number of additional sense bytes to follow. If the
Allocation Length of the Command Descriptor Block is too small to transfer all
of the Additional Sense bytes, the Additional Sense Length is not adjusted to
reflect the truncation.
Summary of Contents for DLTtape DLT 4000
Page 1: ...DLT 4000 Tape Drive Product Manual November 10 2003 81 60043 04 ...
Page 5: ...USER MANUAL STATEMENTS FOR CLASS B EQUIPMENT continued ...
Page 6: ......
Page 24: ...About This Manual Quantum DLT 4000 Tape Drive xxiv ...
Page 62: ...Hardware Implementation 2 28 Quantum DLT 4000 Tape Drive ...
Page 100: ...Messages 4 12 Quantum DLT 4000 Tape Drive ...
Page 264: ...SCSI Commands 5 164 Quantum DLT 4000 Tape Drive ...
Page 274: ...Appendix B EEPROM Resident Bugcheck and Event Logs B 6 Quantum DLT 4000 Tape System ...
Page 280: ...Appendix C Updating the Firmware C 6 Quantum DLT 4000 Tape Drive ...
Page 298: ...Index Index 6 Quantum DLT4000 Tape Drive ...
Page 299: ......