Table109. Sense Keys and Additional Sense (continued)
Sense Key Additional Sense
(ASC/ASCQ) Explanation
Illegal
Request (5h) Medium Removal
Prevented (5302h) An UNLOAD command has failed to eject the tape
because medium removal has been prevented.
Illegal
Request (5h) Bad Microcode
Detected (8283h) The data transferred to the drive during a firmware
upgrade is corrupt or incompatible with the drive
hardware.
Unit Attention
(6h) Not Ready To
Transition (2800h) A tape has been loaded successfully into the drive
and is now ready to be accessed.
Unit Attention
(6h) Reset (2900h) The drive has powered on and received a reset
signal or a bus device reset message since the
initiator last accessed it.
Unit Attention
(6h) Mode Parameters
Changed (2A01h) The Mode parameters for the drive have been
changed by an initiator other than the one issuing the
command.
Unit Attention
(6h) Microcode
Downloaded (3F01h) The firmware in the drive has just been changed by a
WRITE BUFFER command.
Unit Attention
(6h) Failure Prediction
False (5DFFh) A MODE SELECT command has been used to test
the Failure Prediction system.
Data Protect
(7h) Write Protect (2700h) A WRITE-type operation has been requested on a
tape that has been write protected.
Blank Check
(8h) EOD (0005h) A READ or a SPACE command terminated early
because End of Data was encountered.
Blank Check
(8h End of Data not
Found (1403h) A READ-type operation failed because a format
violation related to a missing EOD data set.
Aborted
Command
(Bh)
Invalid Bits in Identify
Message (3D00h) An illegal Identify message has been received by the
drive at the start of a command.
Aborted
Command
(Bh)
Message Error
(4300h) A message could not be sent or received due to
excessive transmission errors.
Aborted
Command
(Bh)
Select/Reselect
Failure (4500h) An attempt to reselect an initiator (to complete the
command) has failed.
Aborted
Command
(Bh)
Initiator Detected
Error Message
(4800h)
A command failed because an Initiator Detected
Error message was received.
Aborted
Command
(Bh)
Invalid Message
Error (4900h The command failed because an invalid message
was received by the drive.
Aborted
Command
(Bh)
Command Phase
Error (4A00h) A command could not be executed because too
many parity errors occurred in the Command phase.
Aborted
Command
(Bh)
Data Phase Error
(4B00h) A command could not be completed because too
many errors occurred during the Data phase.
Aborted
Command
(Bh)
Overlapped
Commands (4E00h) An initiator selected the drive even though it already
had a command outstanding in the drive.
Chapter 4. Sense Keys andAdditional Sense 91