Sony AIT-SDX460, Руководство по техническим характеристикам продукции

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REQUEST SENSE 7. ATAPI Packet Command Specification
SONY AIT-1Turbo drive SDX-460V series Ver.1.0 7-61
Table 7-56: Error Codes 70h and 71h Sense Data Format
Bit
Byte
7 6 5 4 3 2 1 0
0 Valid Error Code (70h or 71h)
1 Reserved (Segment Number)
2 Filemark EOM ILI Reserved Sense Key
3 (MSB)
4
5
6
Information
(LSB)
7 Additional Sense Length (14h)
8-11 Command Specific Information (Optional)
12 Additional Sense Code
13 Additional Sense Code Qualifier
14 Field Replaceable Unit Code (Optional)
15 SKSV
(Optional)
Sense Key Specific (Optional)
16-17 Sense Key Specific (Optional)
18 Reserved
19-21 Read/Write Data Error Counter
22-25 Remaining Tape
26 Reserved CLN Reserved MEW
27 Reserved
A Valid bit of zero indicates that the Information field is not as defined in this Specification. A Valid bit of one
indicates the Information field contains valid information as defined in this Specification.
Error Code: A value of 70h indicates a current error, i.e. the report is associated with the most recently received
command. A value of 71h indicates a deferred error, i.e. the report is associated with a previous command and is
not as a result of the current command. No other values will be returned.
The Segment Number field is Reserved.
Filemark: This bit set indicates that the current command has read a filemark or setmark. Reporting of setmarks is
optional and indicted by the RSmk bit in the MODE SENSE Device Configuration page.
EOM: An end-of-medium bit of ONE indicates that an end-of-medium condition (end-of-partition , beginning-
of-partition .) exists. For Streaming Tape Devices, this bit indicates that the unit is at or past the early-warning if
the direction was forward or that the command could not be completed because beginning-of-partition was
encountered if the direction was reverse.
For WRITE type operations, the drive will return a CHECK CONDITION on any operation which occurs following
detection of the Early Warning End-of-Partition marker. The EOM and Additional Sense Code fields will be set.
For READ type operations, the drive will not return a CHECK CONDITION until the drive encounters the physical
End-of-Partition.
ILI: The Incorrect Length Indicator bit, which indicates that the requested logical block length did not match the
logical block length of the data on the medium. Only READ or VERIFY may cause this bit to be set.
Information Bytes: The conditions of these bytes will contain the differences (residue) of the requested length
minus the actual length in either bytes, blocks, File-marks or Set-marks as determined by the command. (Negative
values are indicated by two’s complement notation.) These bytes will be valid for all READ, WRITE, SPACE and
VERIFY commands for which a CHECK CONDITION status has been generated. These bytes will be ZERO for
MODE SELECT/SENSE, INQUIRY, READ BLOCK LIMITS and TEST UNIT READY commands.
Additional Sense Length: This specifies the number of additional sense bytes that are to follow. If the Allocation
Length of the Command Descriptor Block is too small to transfer all of the additional sense bytes, the Additional
Sense Length is not adjusted to reflect the truncation.