Operating instructions
18-4
SCSI REFERENCE 1012975
CHAPTER 18—REQUEST SENSE (03h)
Information Bytes – Bytes 03 through 06
The autoloader does not support this sense field and returns 0.
Additional Sense Length – Byte 07
This byte indicates the total number of sense bytes that follow this byte. The
value returned is 0Ch (12 bytes).
Command Specific Information – Bytes 08 through 11
This field is not supported by the autoloader. The value returned is 0.
Additional Sense Code (ASC) – Byte 12
This field, together with the Additional Sense Code Qualifier (byte 13),
denotes a specific error condition. For a list of these error conditions, refer to
Appendix A.
Additional Sense Code Qualifier (ASCQ) – Byte 13
This field, together with the Additional Sense Code (byte 12), denotes a
specific error condition.
Field Replaceable Unit Code – Byte 14
This field is not supported by the autoloader. The value returned is 0.
SKSV (Sense Key Specific Valid) – Byte 15, Bit 7
When this bit is set to 1, the information in the Sense Key Specific field is valid.
The SKSV field can be set to 1 only for a sense key of Illegal Request (5h).
3h Medium Error Indicates that the command terminated with a non-recovered error
condition that was probably caused by a flaw in the medium or an
error in the recorded data. This sense key may also be returned if the
autoloader is unable to distinguish between a flaw in the medium and
a specific hardware error (sense key 4h).
4h Hardware Error Indicates that the autoloader detected a hardware failure while
performing the command or during a self-test. Operator intervention
may be required.
5h Illegal Request Indicates that there was an illegal parameter in the command
descriptor block or in the additional parameters supplied as data for a
command, or the autoloader is in the wrong mode to execute the
command.
6h Unit Attention Indicates that the cartridge inventory may have been violated.
Bh Aborted Command Indicates that the autoloader aborted the command. The initiator may
be able to recover by trying the command again.
Table 18-1 Sense key descriptions (continued)
Hex Value Sense Key Description