Stream commands sense data descriptor, Sense data management, Current sense – HP Q153090901 User Manual
Page 154: Cleaning needed sense data descriptor
Commands
154
Stream Commands Sense data descriptor
Drive Error Code Sense data descriptor
(Vendor Specific)
Cleaning Needed Sense data descriptor
(Vendor Specific)
Sense data management
The drive maintains three sets of sense data for every initiator on the bus. For a single host the
following sense data is maintained:
•
Current sense
•
U
NIT ATTENTION
sense
•
D
EFERRED ERROR
sense
Unless otherwise stated, all the following descriptions apply to the sense data for a single host
whose command is being executed.
Current sense
Current sense is the data that is returned in response to a
REQUEST SENSE
command. It is modified
or updated in the following circumstances:
7
6
5
4
3
2
1
0
0
Descriptor Type (04h)
1
Additional Length (02h)
2–3
Reserved (0)
4
Mark
EOM
ILI
Reserved (0)
7
6
5
4
3
2
1
0
0
Descriptor Type (80h)
1
Additional Length (02h)
2–3
Reserved (0)
4
Mark
EOM
ILI
Reserved (0)
4
Drive Error Code
11
7
6
5
4
3
2
1
0
0
Descriptor Type (81h)
1
Additional Length (02h)
2–3
Reserved (0)
CLN (1)
4
Reserved (0)