Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
415
22.3.2
Sense Data Descriptor Definitions
22.3.2.1
Information Sense Data Descriptor (Byte 8 - 19)
The Information Sense Data Descriptor is stored in bytes 8 through 19 of the descriptor format sense data. Format of
the Information Sense Data Descriptor is shown in Table 314
Table 318 Information Sense Data Descriptor Format
Byte
Bit
7
6
5
4
3
2
1
0
0
Descriptor Type (00h)
1
Additional Length (0Ah)
2
VALID
Reserved
3
Reserved
4-11
Information
ILI = 0 (or if the descriptor is not present): The Information field contains the unsigned LBA associated with
the sense key. The LBA reported will be within the LBA range of the command as defined in the CDB.
Descriptor Type
Set to 00h for Information Sense Data Descriptor.
Additional Length
Set to 0Ah for Information Sense Data Descriptor.
VALID
This bit is set to 1 when content of the Information field is valid, and set to 0 if the
Information field is invalid.
Information
This field contains an LBA or other information depending on the value of the ILI bit in the
Block Command Sense Descriptor (See section 22.3.2.5 "Block Command Sense
Descriptor").
Note: An LBA other than the command LBA may be reported on the Reassign Block (07h) command.
- ILI = 1: The Information field contains the difference (residue) of the requested length in bytes. Negative values
are indicated by two's complement notation