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ST43401N/ND and ST43402ND Reference Manual, Rev. C
The Request Sense command
The Request Sense command (03H) requests that the target transfer sense
data to the initiator. This data is returned in the extended sense format. Within
this format are the following three levels of information:
• Sense key—defined in Table 12.
• Additional Sense Code—see byte 12 listing in Table 13.
• Additional Sense Code qualifiers—see byte 13 listing in Table 13. These
qualifiers differentiate between related definitions all having the same
Additional Sense Code.
All codes not shown in Table 13 are reserved.
Table 12. Sense key descriptions
Sense
Key
Description
0
No sense
H
1
Recovered error
H
2
Not ready
H
3
Medium error
H
4
Hardware error
H
5
Illegal request
H
6
Unit attention
H
7
Data protect
H
8
Reserved
H
9
Reserved
H
A
Reserved
H
B
Aborted command
H
C
Reserved
H
D
Reserved
H
E
Miscompare
H
F
Reserved
H
33
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