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SCSI Commands
5-138
Quantum DLT 4000 Tape Drive
REQUEST SENSE Command (03h) (continued)
Table 5–66 REQUEST SENSE Data - Field Descriptions (continued)
Field Name
Description
Command
Specific
Information
Bytes
Command Specific Information Bytes are handled as device-specific and can be
logged by the operating system on error conditions. On tape medium errors,
such an entry usually contains the current SCSI Logical Block Address.
Additional Sense
Code
This field (and the field for Additional Sense Code Qualifier) provide additional
information about the Sense Key and cause of a CHECK CONDITION status.
Additional Sense Codes are discussed in detail later in this chapter.
Additional Sense
Code Qualifier
This field (and the field for Additional Sense Code) provides additional
information about the Sense Key and cause of a CHECK CONDITION status.
Additional Sense Code Qualifiers are discussed in detail later in this chapter.
Sub-Assembly
Code
Not used. Returned as 0.
SKSV
Sense-Key Specific Valid. When = 1, indicates that the Sense Key specific field is
as defined by the International Standard.
C/D
Command / Data. When set to 1, this field indicates that the illegal parameter is
contained in the Command Descriptor Block. A C/D set to 0 indicates that the
illegal parameter is in the Parameter List from the initiator.
BPV
Bit Pointer Valid. When set to 1, this field indicates that the Bit Pointer field is
valid and designates which bit of the byte designated by the field pointer is in
error. For a multi-bit field, it points to the most significant bit of the field.
Field Pointer
This field indicates which byte of the Command Descriptor Block or Parameter
List is in error. For a multi-byte field, the most significant byte is indicated.
Internal Status
Code
Internal Status Codes are explained in detail in Appendix A.
Tape Motion
Hours
This field reports the number of tape motion (i.e., head wear) hours. Format is
given as a hexadecimal word (2 bytes).
Power On Hours
This field reports the total number of hours that drive power has been applied
since its last power on cycle (not total power on hours over the device’s
lifetime). Format is given as a hexadecimal longword (4 bytes).
Tape Remaining
This field reports the amount of tape remaining in 4KB (4096 bytes) blocks.
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: ......