SCSI Description
5–176 Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
REQUEST SENSE Command (03h) (continued)
Table 5–84 Supported Sense Keys (continued)
Sense Key Code Description
ILLEGAL REQUEST 5h The drive detected an illegal parameter in the Command
Descriptor Block or in the additional parameters supplied as
data for some commands. If the drive detects an invalid
parameter in the Command Descriptor Block, it terminates
the program without altering the medium. If the drive
detects an invalid parameter in the additional parameters
supplied as data, the drive may have already altered the
medium. This sense key may also indicate that an invalid
IDENTITY message was received.
UNIT ATTENTION 6h The drive generates this sense key whenever the drive is reset
by a TARGET RESET message, a hard reset condition, or by a
power-on reset. Other conditions that generate a UNIT
ATTENTION include:
• The mode parameters in effect for this initiator have been
changed by another initiator.
• The microcode has been changed.
• Tagged commands queued for this initiator were cleared
by another initiator.
• INQUIRY data has been changed.
• The mode parameters in effect for the initiator have been
restored from non-volatile memory.
• Other events that require the attention of the initiator.
DATA PROTECT 7h A Read or Write command was attempted on a sector that is
protected for this operation. The requested operation was not
performed.
VENDOR SPECIFIC 9h This sense key is used to report specific Quantum conditions.
ABORTED COMMAND Bh The drive aborted the command. The initiator may be able to
reissue the command successfully.
MISCOMPARE Eh The source data did not match the data read from the
medium (i.e., a mismatch).
