Request Sense Data; Fixed Format - HP Q153090901 Technical Reference Manual

Allocation
Length

Request Sense data

Sense data is recovered from the drive by means of a
reporting of
CHECK CONDITION
returned: Fixed and Descriptor.

Fixed format

The Fixed format of the returned data is as follows:
7
Valid
0
1
2 Mark
(MSB)
3
6
7
(MSB)
8
11
12
13
14
15 SKSV
16 (MSB)
17
18–20
21
22
23
Returned Sense data fields:
Valid
Error Code
148 Commands
0 No data is transferred to the host.
>0 The maximum amount of sense data in bytes that should be transferred to the host.
The drive returns up to Allocation Length bytes of data; any extra sense data is lost.
by the drive. There are two formats in which the data can be
6 5
EOM ILI
Additional Sense Length (10h)
Command Specific Information Bytes
Additional Sense Code Qualifier
Field Replaceable Unit Code
C/D Reserved (0)
Field Pointer/Drive Error Code
Reserved (0)
1 Indicates that the information bytes contain valid information as defined in
the SCSI specification.
70h Indicates that the error is current, that is, it is associated with the command
for which
CHECK CONDITION
REQUEST SENSE
4 3
Error Code
Segment Number (0)
Rsvd(0)
Information Bytes
Additional Sense Code
BPV
Reserved (0)
CLN
Pad bytes (0)
status has been reported.
command following the
2 1 0
Sense Key
(LSB)
(LSB)
Bit Pointer
(LSB)
Reserved (0)