Sony SDX-700C, Product Specifications Manual

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6.Command Specification REQUEST SENSE
SONY AIT-3 drive SDX-700 series Ver.2.1 6-92
Read/Write Data Error Counter : After a read operation, this field returns "Number of read soft errors" fields of Log
data. After a write operation, this field returns "Number of write soft errors" fields of Log data. This field is valid only
after a READ or a WRITE command. It is direct mapping of the relevant Log data and is cleared/reset in the same
way as the Log data.
Remaining Tape : The capacity remaining of the tape in 1024 byte blocks is returned. This means the area from the
current logical position to EOP.
CLN : When this bit is set, it indicates drive request cleaning . Refer to the clause 4.5.1
MEW : When this bit is set, it indicates Media Warning. Refer to the clause 4.5.2.3
A description of the different Sense Keys (Byte 2), Additional Sense Codes (Byte 12), and the Additional Sense
Code Qualifiers (Byte 13) supported by the SDX-700C are listed in a table beginning on the following page.
The following Table shows the REQUEST Sense Keys and the Additional Sense Key (Byte 12) and the Additional
Sense Key Qualifier (Byte 13) supported by the SDX-700C:
Table 6-73: Sense Key Descriptions
Sense
Key
Bytes
12 13
Description
00h NO SENSE : Indicates that there is no specific sense key information to be reported for
the designated logical unit. This would be the case for a successful command or a
command that received CHECK CONDITION or COMMAND TERMINATED status
because one of the File-mark, EOM, or ILI bits is set to one. For File-mark or Set-mark
detected the drive will be positioned on the EOM side of the mark if the drive direction
was forward and on the BOM side of the mark if the direction was reverse.
00 00 NO ADDITIONAL SENSE INFORMATION
00 01 FILEMARK DETECTED
00 02 END-OF-PARTITION/MEDIUM DETECTED
00 03 SETMARK DETECTED
00 04 BEGINNING-OF-PARTITION/MEDIUM DETECTED
00 05 END-OF-DATA DETECTED
01h RECOVERED ERROR.
5D 00 FAILURE PREDICTION THRESHOLD EXCEEDED
02h
NOT READY . Indicates that the logical unit addressed cannot be accessed. Operator
intervention may be required to correct this condition. Typically this indicates that there
is no tape loaded. This status is also returned if the drive is currently rewinding
following REWIND with Immediate bit set and another command is received (except
for INQUIRY and READ BLOCK LIMITS which return GOOD status).
04 00
LOGICAL UNIT NOT READY - Media is present within the drive.
This status is returned to any tape motion command following UNLOAD with
Immediate bit set or if the Eject button has been pressed by the operator. Also can be
caused by the command sequence, PREVENT ALLOW MEDIA REMOVAL with
Prevent bit set followed by UNLOAD. Tape motion commands such as READ, WRITE
or SPACE are not allowed but Diagnostics which do not access the tape are permitted.
04 01
LOGICAL UNIT IS IN PROCESS OF BECOMING READY - This status is returned
following a LOAD command with the IMMED bit set for any tape motion command
before the tape is loaded. Also during the auto load following a tape insertion.
3A 00
MEDIUM NOT PRESENT - This status is returned for all tape motion commands when
there is no media within the tape.