SCSI Commands

REQUEST SENSE Command (03h) (continued)

Table 5–70 REQUEST SENSE Data — Field Descriptions (continued)

Field Name

Description

Additional Sense

This field (and the field for Additional Sense Code Qualifier) provide additional

Code

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

This field (and the field for Additional Sense Code) provides additional

Code Qualifier

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

Not used. Returned as 0.

Code

 

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

Internal Status Codes (Vendor Unique) are explained in detail in Appendix A.

Code (VU)

 

Tape Motion

This field reports the number of tape motion (i.e., head wear) hours. Format is

Hours

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 4 KB (4096 bytes) blocks.

 

 

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Quantum DLT 7000 Tape System

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Quantum Instruments DLT 7000 manual Sksv, Bpv
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DLT 7000 specifications

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